Thanks again for the encouraging comments. Trust me, it really does help.

Airbrushing the under colour works great. I haven't been doing it every time, but I think I'm getting better at sticking the tape on more tightly together. So no more bleeds thus far.

I also picked up some masking oil. It works great for doing around curved areas or recessed areas that tape can't get to.

Not making very fast progress with the painting. A bit tentative if I'm honest, but apart from the blue panels, I'm really happy with how the dark grey panels on the nacelles came out and those sort of fleshy coloured panels on the nose and behind the bridge.