I have several T-shirts that I’ve cut up, the way you see on Instagram. Cut off the neck ribbing, bottom, and sleeves, tug and let them roll. This makes a unisex cut shirt fit me so much better. They’re always too long for me.
The neckline of this tee wasn’t cooperating; part of it was rolling out, and part of it was rolling in. I saw a cute video tutorial by @jamiefaeriecrochets on Instagram, and decided to try it.
First, you turn the raw edge under, and make a running stitch, 1/4 inch or so. The hardest part is getting the yarn needle through the fabric; pick the smallest eyed needle you can, and still get your yarn threaded through. I’m using fingering weight yarn.
Next, single crochet around, using two single crochet stitches in each running stitch. Here we are halfway around.
Make one more round of single crochet, so you have two, total. Done!
I love it. I could add it to the sleeves, too, but I think this is just enough. And I love that I had a yarn that was a great match for this tee. It’s leftover from my Honey Bee Mine Cowl, but the color has been discontinued.
And now I have a more presentable tee! Have you tried cutting up your tees?
PDXKnitterati 
Great idea Michele! I miss seeing you, hope you are well! Love, Deb Samuels