Thanks for the words of encouragement and advise, guys !
So now I'm moving onto the yellow and experimenting with BLACK lines. These look hard to do, and they make a huge difference if they are missing. Givin advised me to order 6mm hobby tape, and I found a cheap place in China that has them, but shipping was expensive. Anyway, time to improve the yellow area.
Here's a picture of what I need to paint and the fine hobby tape - which works REALLY bloody well !
This stuff is SO EASY to work with ! So I have a straight line and a bent line. No problems. I mask off the area with the tape.
Mask off the area properly. Prepare the paint - the YELLOW is almost a perfect match. Spray the yellow section - a "mist" coat first, then two thicker coats.
Remove the tape after 5 minutes and viola !
Now I prepared the upper section near the spot target in the update before this. It is painted white but has no BLACK lines. So I need to do this in sections (as per one of Gav's tutorials). It is quite easy, once you get the hang of it. So I'll do THREE lines first. I used the 6mm tape, then blue low tack 3M tape , and finally masking tape.
Shoot the BLACK paint from the airbrush ;
Now you can see the original line, and my new lines. I still have to finish off when it has dried.
In the final picture on this update, Ive painted the YELLOW arrow. I simply used the frisket, cut out the arrow with the scapul and painted. Simple !