How long has the epoxy set before applying filler?
The passenger side looks good. You might want to consider buzzing over it with some 80 grit and then apply some poly primer like slick sand. A couple coats over that and you should be able to block it smooth. This is where poly primer plays and extremely important role in my book. Spray it on even and block it out letting ONLY the pressure of the block do the work. You dont have to worry about trying to glaze that entire large aread and blocking out your spreader marks on an already weakened surface. Can be difficult and challenging to a novice to say the least.
That's how i do most roofs that are in this shape. A rough fill with filler..the rest is done with poly.