I have just started body work on my berlinetta. I repaired the passanger fender perfectly, but I got to the passanger door today repairing the dings in the middle of the door where the body creas is and fixed all of the dents. But now where I fixed the dents the crease is gone and it is obvious that I did repair work. My question is how do I make the crease with the bondo so it doesn't look cheap, and you can't tell I did anything?