Next project - slippers!!

I'm obviously on a crocheting kick.  I'm so excited to make myself some slippers!  I found this awsome design and step-by-step directions here.  I can't wait to try them out.  I bought a pair of mary jane knit slippers from Target last Valentine's Day and wore them out - we're taking big holes in the bottom!  So, for Christmas, I asked for more slippers like those.  But the new ones I got don't have a mary jane strap, more like a ballet flat and they keep falling off.  Since I crochet, I thought, why don't I try to make these myself?  So, that's my next project!