Hello, if you use blender you can change the render mode to cycles. It will improve the lighting and it will look very realistic. You can also add an environment texture. There are multiple good tutorials on YouTube about environment textures and renders presets.
ok so first of all. the penguin is floating, he just has a sword pack for no reason, his arm is like literally twisted.
the lighting is very basic and kinda matches the background, but really doesn’t. the character design is very basic on this render i suggest not using your own roblox character and creating your own in roblox studio other than for pfps.
how to improve lighting:
make use of 3 point lighting,
have vibrant and colorful lighting,
pose your lights.
i also suggest using cycles or cyclesx, as they have more realistic shadows and lighting and renders