Well I think I failed miserably :-/
I tried to get it as smooth as possible, and it seemed ok, then I sprayed on some adhesive promoter, then 5 coats of high build primer. Once the primer was on, all the imperfections became painfully visible. Not sure what to do now, more sanding maybe? More bondo? I've never used it before so don't know how thick I can go, or if I have the skills to shape it properly. I also dont want a 200 pound dash...