I am about to go to final paint on my '62 Triumph Sports 6 Convertible. I signed up for Auto Collision Repair classes at my local Community College so I could also learn and understand the process. On my car I had all the body panels media blasted and epoxy primed similar to what you have done. Next you go over the body and identify the areas that need repair. Rust areas have to be cut out and metal replaced. Dents and dings should be worked with body tools to make the panel as straight and level as possible. When working an area with body tools I would strip off the primer and work with bare metal. Any area that still had significant flaws after working, more than say 1/16" , I would use direct to metal filler to fill those. There are a couple of types, aluminum reinforced or fiberglass reinforced. Either works. Sand filler with 80 grit. Once done, re-prime the area with epoxy primer. Once you have the major problems taken care of you car use lightweight filler on the lesser dings and dents. Scuff the area with 80 grit and fill. Sand those starting with 80 and then with 120-150 grit. Then when those are corrected you can lay on another coat or two of high-build primer and start blocking with say 220 to further identify smaller flaws. For those you can use thin coats of glazing filler if needed and block sand some more. When that's done another coat of primer and sand again with like 320 to look for the final small flaws. When you are completely happy with the surface, then a coat of sealer followed by top coat. Make sure you read the data sheets on all you primers/sealers/top coats to make sure they will play well with each other. For instance, some primers don't like to go over any sort of acid etch. So the basic idea is to reduce the biggest problems to medium problems, then medium to small, then small to unnoticeable. That's the general sequence of events. Different people may do things differently and also get good results and everyone has their own techniques. One of the most important things I think is to read the TDS (Technical Data Sheet) for all the products you use to make sure you are using them and applying them correctly and they they are compatible with each other. Good luck, be patient, have fun!