I made my first fitted diaper today using an old prefold I already had but never use anymore. I think it turned out great, and I cannot wait to use it! It seems a bit smaller than I would have liked, so it won't fit Peanut but should fit Snowflake perfectly. I used a tutorial I found online for these: http://www.thehandmadedress.blogspot.com/2012/12/diaper-tutorial-how-to-make-fitted-from.html?m=1
I plan on making several more of these to add to our cloth diaper rotation so I don't have to wash every other day.