Hi, I've been painting for a little while. When I try to add a color next to another, I pick up the other color on my brush and it smears into the color I'm adding. Another problem is I can't place the paint from the brush exactly where I want it to go, or create a nice sharp edge, and the third problem is I don't like the drag of the brush on the canvas, which is gessoed and sanded, unless I have a lot of paint on the brush, but then this causes the problems just mentioned above. Any suggestions? I appreciate that all of you take the time to answer our newbie questions. I wish I could have one of you sitting next to me when I paint! thanks!