That's not at all bad, especially as the P38 is not the easiest model to get right. Everyone has their own way of doing things, but it's generally easier to paint the whole model after the main assembly, leaving off such things as wheels, props, antenna etc., as you've found out! This is even more important when a 'natural metal' finish is required, as anything like cement, thinner, filler and so on will damage the paint. But, from what I see, I reckon you'll still get a reasonable finish. Good work.