You've got a shaped piece of knitting, and a flat surface to set it out to dry. Here's my trick for blocking hats. The pink baby hat shown is from the eBook Wee Wooly Toppers by Wooly Wormhead, knit in Knit Picks Comfy Worsted: ...
by VeryPink Knits
by Interweave Craft
by Pattymac Knits