Thanks for the tip Rookie. I'll try liquid paper next time...
Ok, first off here's my reference picture...
I'm pretty pleased with how the exhaust manifolds turned out. I used a Tamiya weathering kit and gave them a good rub with the Burnt Red to give them that oxidized look...
I'm not so happy about anything else I managed to do this weekend. I masked off the engine head plates (apologies if my terminology is incorrect) and gave them a coat of flat black so they looked a lot more like the photo (pretty good I thought)...
But then I tried to pick out the 'FORD' lettering by dry brushing Tamiya Flat White over it. Unfortunately it speckled a load of paint on other stuff and the lettering looked crappy
I then brushed (not airbrushed) flat black over the top again and masked around the lettering so the dry brushing only hit the area I wanted. The result... Poor IMO...
The Tamiya Flat White felt like dissolved chalk dust
I tried painting the lettering with a fine brush but the paint kept clumping and wouldn't go smoothly onto the surface even when I thinned it.
Now it looks a lot worse than after I just airbrushed flat black over it.
On to painting the brake ducts and pads on the transmission assembly (I'd sprayed it with X-10 gun metal which I thought looked pretty good too), but when I opened X-18 Semi Gloss Black it was ROCK SOLID!
One trip to the hobby store and a new bottle of X-18 later and I'm thinning it and brushing it on to the relevant parts... Again, the paint goes on HORRIBLY. It's drying so quickly, even thinned, a skin is forming over the top quicker than I can use it. It didn't go on smoothly at all, I had to sand it off again.
It seems like every time I use a brush it comes out badly. What am I doing wrong? Should I have airbrushed the parts before I put the transmission together? How much assembly should you do before painting?
Feeling a bit discouraged, I decided to knock it on the head for this weekend. I made a few other rookie mistakes as well, like accidentally mixing enamel thinner with acrylic paint *facepalm*. I'm not going to give up though.