1st time ever doing body work and painting 1970 dart swinger

I purchased the 70 dart from Colorado 6 months ago and decided to try to do my own bodywork and paint myself because i dont have any money left I spent it on the drive train and interior ,I will be using single stage Nason ,I watched a bunch of videos ,I took the engine and tranny out sanded and prepped engine compartment first im painting it Y2 sunfire Yellow it was originally y3 cream yellow with white vinyl top am changing top to Black