No, just keep practicing riding flat based on the flats to get a good feel for it. You will want to maintain some edge angle at all times to prevent edge catching. When you are trying to get across flats, you have already probably noticed that you get more edge catches. This is because of the low to non existant edge angle and the board will tend to pivot enough to catch the edge on any uneveness in the ground. Riding totally flat based requires you to develope a feel through your board into the bottoms of your feet to master. When doing this, you also must keep your upper body quiet and your shoulders in line with the board; any upper body rotation will cause the board to pivot and screw you.
__________________
|