I think your score is based more on the photography than the painting. The photo has only one angle and doesn't fit all of the diorama in frame, so it's hard to see what's going on. The painting appears glossy, I'm not sure if that's light reflection or your paint finish. Voters generally prefer to see matte paint finishes. The tree looks kind of haphazard. All of that aside, it looks like a fun, dynamic scene, and what I see of the paint quite nice, particularly on the halfling facing the dragon. With just slightly better photography, my guess is I'd be happy to give this scene at least a 7. (Mon francais est mauvais, je m'excuse. Le peinture est bon, le photo n'est pas.)