Found another great crocheted slipper pattern: Simple Classic Mary Jane Slippers. It's a very easy pattern for beginners like myself. As long as you can sc, ss, and sc2tog, you can do this pattern. I crocheted this in the same Ella Rae Classic yarn I used for the Two Button Ballet Flats.
This is the left slipper. I still need to crochet it's mate. But it went super fast. I think it needs some embellishment. Maybe a button on the outer edge of the strap. Once I finish the second one, I'll have a better idea of how I want to embellish them.