Like FK Irons said....think of the skin as an organ. Riding the tube causes a lot of unnecessary trauma to the skin. I have a fairly quick hand myself....often have to remind myself to slow down. Fusion is a pretty thin pigment. I like Alla Prima as well. They have some really nice colors that flow really well. Are you using carts? Are you having issues getting the pigment in fast enough...there are soooo many things that could be the culprit.

On a side note, I know Jason Ackerman said he tried to make the skin look like smooth cookie dough. To me that is overworked...but his work is pretty solid.....so different tech for different artists.

Best of luck. Send a pic if you could.