Was planning on sandblasting my motor compartment and doors/jambs. Right after I plan on blowing all sand off the car(I know this will take a while to get it all out), use wax and grease remover on it and use DP40 then K36 filler primer. After that I will work on completing the rest of the body work.

I have a Finex gun that I have only used once so I have limited experience.

My question is you can't screw up primer can you?? If I use the P-sheets to mix things appropiately it's about impossible to screw it up, correct?