Felted slippers!

I've been working on some felted slippers this week. CO 20 sts and knit for 12.5 in., thread through end loops to form toe and sew up heel and top of foot. Felted them 3 times yesterday and they only shrunk width wise and not in the length! I'm so frustrated and upset! That was 3 skeins of Cascade! They're sooooo narrow and lonnnnng! I'll have to tack them to a wall and use it as a flower vase! or a pencil holder... I'm now knitting a dishcloth that I know will turn out! Was going to do the whole before and after felt pictures but...ugh.