Here's the easiest way to do it.
http://www.greatamericanquilt.com/pd...gyourquilt.pdf For a top, I'd use the dry method. It's faster and easier.
When a finished quilt is blocked, it holds it's shape only until the next time it gets wet. That's fine for show quilts or wall art, but not so great for utility quilts. When a top (or even a single quilt block) is blocked before quilting, it will keep it's shape after quilting without any special treatment. Much better for utility quilts.
Also check this discussion.
http://www.quiltingboard.com/posts/list/24112.page