I've really not done a lot of repainting. And this is certainly my first 2 colour job. Tamiya is great and easy to use, but if you look really closely at it there are a couple of bits of blue spray on the white areas in unexpected places. It really only requires the patience to wait for the paint to dry.
Applying decals is something that I'd never really done before I tackled the C2 street car repaint (there's a thread here. Little green frog or something like that) I actually learned a huge amount doing the TeamSlot Celica which is running in the current OzRally. I really struggled with them and finished up doing the decals about 3 times. I got Phil to print these decals for me rather than doing them myself because they are largely white and gold. But I made sure I had enough decals to do 3 cars just in case I had problems. As it was I only wasted one angel, but I did re-design a little to make sure I didn't have to go completely over the door handles. Piping hot water and Micro-sol and Micro-set are a must.
Painting, like anything, takes practice.
Would it help you all if I told you the Lancer currently runs like an amputee dog?