Ok cool thanks I have used masking tape and an exacto. Was just wondering if you had a trick going to have to try some liquid mask.

A lot of it is just steady hand and I'm not even great, if you have problems you can try masking tape still need some xacto skills but not as much. Key with painting lexan is cleaning it good then light coats. Check out some YouTube vids they'll help a lot.

Liquid mask cut out with sharp exacto, first couple coats super light so there isn't any runs.

Did you paint your bodies yourself if so how did you get the sharp lines on the zig zag