I block all of mine that has a pattern to them! I just fold them in half then in half again and hold them under the water in the sink. Then kind of press on it to make it suck up the water.(no ringing action.that does throw them out of shape)
Next I press it to get the water out of it and then place it on a towel. I use my fingers to smooth down the fabric around the pattern. Once it is dry it looks LOTS better!