Don't worry. I'll copy with that.
Circles...now I see. But that is not you need to try. I was sure you have never done that earlier that that's way you have to get some training. It is very easy.And it can help you with the cockpit masking.
Take a coin, it would be better if it was a little bigger that 1 US cent. Put the coin and desk and cover with a sheet of paper.It can be a sheet form your exercise book or printer. Then press the sheet with fingers in way to make it immovable
.Then draw with the pencil at area where the coin is under paper.The pencil has to be moving left,right, left and again all over the coin.Hold it in the way the pencil ending was used with its as much as larger surface. The drawing of the coin should appear quite quick. Try to do that and show me the effect please.