well you are probably too hard on yourself but yeah I do see what you mean about kinda muddying it up a bit as you kept adding more. It has been a while since I played around with water colors but I always liked the technique of painting with water first (plain water) then touching the color to the wet paper and letting it flow into the wet area from there. If you don't like the heaviness of the look you are getting maybe try that :) Keep on going!