Had another practice
 

Having sorted out my compressor I've managed to find some time to have another go at painting. Apart from getting a bit excited at the end and rushing things, hence the messed up blue, it's turned out well I think.

Some areas of the tighter curves aren't as good as I would have liked, and I sprayed the blue from a bit too far away so it's spread further than I wanted (you can just see a straight line that shouldn't be there), but on the whole I'm happy.