It's not exactly a minor cosmetic modification, but I filed down the rounded front skirt and crotch area to make them look sharper. Also, you probably wouldn't notice unless I told you 😂
I also added some panel lines to the thighs, but unfortunately, they're not visible once assembled 😭
During assembly, I used 1mm thick resin washers on the torso's connecting shafts to slightly extend the torso.

The RMS-108 Marasai is finally finished! 💦😅 | Syoitsu2's Gunpla works