RC-1 shaping question

Hi, i got a RC-1 for xmas, just looking at the top side of the body down the bottom ( where the trapeze would go) see pic.

Has anyone done one of these kits? And if so do you round the edges (red lines in pic) and sand the top part flush on a 45 degree angle (purple line).
Also i imagine i fill this part first? And if so with what ?

Or do people just leave it as is like this https://d.facebook.com/PitBullGuitar...=3&__tn__=EH-R

Sorry for my bad explanation
Thanks Mark

Why do you want to change it? I guess you could do what you are suggesting, but I would be very careful and check the amount of material there so you don’t carve through to the chamber.

Hi , i was thinking of painting it a burst of some sort and thought it may look wrong if i didnt fill/round off.....but now im thinking i may leave it and do it a solid colour