Hey, I'm new, anyone know anything about shoes?

[yellow-koala.livejournal.com]

Day before yesterday I painted a pair of shoes (I have the flu and am desperately bored), and I thought they turned out pretty spiffy. I figured I'd like to do more and sell them, but before I do that:

My problem is that I don't know how to seal the paint (acrylic on faux leather)without making the shoes hard. They need to be able to move so they're (semi-comfortably) wearable.