>>29704221You can tell that this chubuki is embarrassed by how her belly looks from this perspective, but as someone who doesn't mind bellies with something to grab onto this is an easy 9/10 - and the last point isn't missing because of what we see in the centre there.
First off, the perspective is just great. Open legs are always enticing, and it's rare to see so much focus on the lower belly along with lighting that highlights its shape so perfectly. You have the v-lines clearly visible (as indentation and through shadow), and the curve of the belly up to the belly button almost is perfectly clear - without any linework. It feels so 3D, it almost pops out of the screen.
The belly button is the v-shaped hole it should be from this perspective, and how little it is fits with the fubufat around it. The horizontal lines next to it, right where light meets shadow, look both realistic and pleasant.
The only thing this belly is missing is more visible sides - a slim (no fat there, please) waist to give the broad hips the aesthetic impact they could have, and to contrast with the belly. You could also consider a bit of sweat to give the belly some more flavour (heh), but it's not in any way necessary with how great it looks already.
