I'm going to be a bit milder because scale model painting would be different than game model painting but...
DRYBRUSHING?! WITH AN AIRBRUSH AVALIABLE?! ARE YOU STUPID?! With that you HIGHLIGHT, not drybrush you moron!
Ugh, he does the difficult part and then screws it in the final detail...
And you did two thin coats of paint, didn't you? It would be a justificatrion for murder otherwise.