I use this fun technique which you might also enjoy... First, I brush in the 'sort of' shape of the silhouette, then I'll take a DRY brush and swipe over the wet in a sweeping downward stroke. It makes a cool looking soft edge that I really like, and it's super fun!

That sounds great. I actually now bought new block of watercolour paper Arches, rough, just arrived today, I am very excited about it. Will start my exercises :)