I knitted ds a cardigan. Worrying it was going to be too small i fiddled with the pattern and now it is too big. It has been on the drawer for months but i noticed that the wool was going a bit bobbly. I wondered if i felted it that i could solve 2 problems in one hit? Am i right? Will the felting make it heavier like a jacket rsther than a cardigan? How would i do it? Will i ruin the shape? Tia