Here's how I block:
-soak the object in warm water for 5 minutes. I use wool wash, but you don't have to.
-place the item on a towel, and press out the excess water (NEVER WRING, OR AGITATE, AS THIS CAUSES FELTING!)
-Pin out the item to desired dimensions and leave it until dry.
The soaking and blocking will naturally even out any messy stitches. I hope that helps!
[COLOR=red]Edit- If you don't want to change the size, just follow the steps, but don't stretch it when you go to pin it out. You will still need to pin, it, though.[/COLOR]