Personally, I would make handle a little bit thicker and shorter to make whole sword looks kinda more massive. But except that, this is one of the most interesting fantasy weapons that I seen.
The sword handle curving down gives it a weak feel, make it straight to emphasize power. Also, I believe that the handle should get wider by the dragon’s head to act as a neck and emphasize how strong the blade is. Amazing job on everything else.
It looks very good! I think the cross guard with the beast head stands out the most but I think the render in roblox makes the model look way worse simply because of how saturated and bright the neon is