Vintage crochet purse- Floral Pouch by Pierrot (Gosyo Co., Ltd) on Ravely. This pattern is available for free. Japanese version available here. Both English and Japanese versions are fully charted using standard crochet symbols.
This pattern is for knit slippers, but I can totally see using a wool sweater and cutting and serging slippers from it! Home Slippers - DIY. this is knitting, but I bet I could use this to crochet some