So I made several versions of this t-shirt onesie out of old t-shirts I had. After 2 attempts I finally got the directions right (I am spatially impaired) and made the 3rd onesie correctly. I just used a shirt I found at GoodWill for $1 (good place to go for practice t-shirts till you get the hang of it.
Now, time to make a few more of these to make sure I have the hang of it.
What a great way to use those t-shirts you don't want to get rid of.