As predicted, I didn’t finish my mosaic tile framed bathroom mirror yesterday. Boy, do I know how to pick the tedious, labor-intensive, time-consuming projects, or what??!! 
I did, however, get all four sections covered with tiles, and get them mitered. The frame isn’t put together yet (I’ll use my Kreg Jig to do that), so the pieces are just lying there, but here’s what I have so far…
The tiles on the mitered corners don’t line up, and that bothered me for about ten seconds before I finally decided that perfection is way overrated.
But if you decide to do this project, and the unmatched mitered corners will bother you, I’d suggest cutting the tiles into squares rather than rectangles, and then putting the frame together before gluing on the tiles. That way, there will be no mitered corners showing.
But I wanted rectangle tiles, so I have to live with my mitered corners. And I’m okay with that. 
Now I know that some of you got a little lost with my assembly instructions yesterday, so I hope to clarify a few things for you.
First, here’s a look at the back of the frame.
Again, it’s not assembled yet, so the pieces are just lying there. I’ll try to remember to get a picture of the back once it’s all put together with the Kreg Jig.
So now you can see the purpose of the lattice piece that I glued onto one edge of the 2″ x 4″, right? It’s on the outside edge of the back of the frame, and the mirror will be placed right into the inset part.
On a frame, that inset part where the picture / glass / mirror / cardboard backing go is called a rabbet.
And once the glue on the lattice was completely dry, I started attaching the tiles beginning with what would be the outside edge of the frame. Once the tiles were attached, I cut out the frame pieces at a 45-degree angle. You can see the cut lines represented by the red lines on the left, and each of those sections became one side of the frame.
I hope that helps to clarify the construction for those of you who were confused!
I have two more steps (putting the frame together, and preparing it with a spray primer) before I can get to the fun part…painting the tiles!!!
I’m aiming to have it done by tomorrow. We’ll see.
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I'm an interior decorator-turned-blogger, and a DIY fanatic. My blog is where I share 
It looks so good. I noticed they didnt match up and then quickly decided it wouldnt matter to me either LOL
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I didn’t even notice the corners because the frame as a whole looks so good. Can’t wait to see it finished.
You are so talented, I’ve been following your blog since last year. Keep doing what you do. You have given me so many ideas!
Okay, that is so creative using the rulers for tiles. I have a round mirror in my room that I wanted to add mosaic tiles to the edge and after pricing how much it was going to be, I’ve been looking at an alternative solution. This is so so clever, Kristi! Thank you for always inspiring and sharing that mind of yours with us!
Sharon
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You have such a creative mind to think of things like this! Glad you are putting it to such good use blessing us with your great ideas. Love your blog!
Bobi
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I love it already and it isn’t even put together and painted! LOL
You really are extremely creative and talented with tons of energy. I love your blog and look forward to seeing what you are up to.
That is going to look amazing! What a great idea! You amaze me, girl.
xoxo
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I like it. I guess you could always grout in around the cut corner tiles to make them look like they are connected into special ‘L’-shaped corner pieces. But, yeah, there comes a point where you have to pick your battles. lol Good job. I’m enjoying the bathroom makeover immensely.
Looks Great! Corners don’t bother me at all. I really appreciate your creative process, I’d like to think it is similar to mine in ways of finding creative solutions (ie creating the rabbet). I have suffered for years from stultifying perfectionism, but I am learning that “Done is better than perfect”. I’ve come to embrace the concept of Wabi-Sabi, which aesthetic is sometimes described as one of beauty that is “imperfect, impermanent, and incomplete”. I’m workin’ on it.
I’m really excited to see the end product! I would have never though of making my own tiles. So clever!
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Wonderful! Another way of doing it is having all the tiles go the same direction, I guess. But your way is probably more interesting. Cannot wait to see it painted and all fixed up. It’s gonna be great!
Thanks for this post. The previous post was a little hard to see just what you did, but this post nails it! As always, your creativity amazes me!
I always look forward to reading your posts. And rather than being bothered by the tiles on the corners not matching up, I think it gives it a desired, unique look! You are such an inspiration!
Thank you for clarifying what you did. I was one of the ones that was confused, but it clicked today. As far as the corners not being “perfect”, no one will notice unless you point it out. I look forward to reading your posts. You are an inspiration for me to try new things.
You certainly have creative one-of-a-kind ideas. I like that trick of building up your mitered frame so that you can hide the mirror behind it. I framed a huge builder mirror and used select 1×2′s. It killed two birds with one stone. Gave me something to mount my mirror clips to and made the frame look extra thick and chunky. I can’t wait to see the finished project installed. Keep up the good work.
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I love it! This was a lot of work but the result is really fantastic. It looks just like mosaic! (I actually cheated b/c I saw the result if this already) going backwards through my emails! Amazing:)
Christy