>>54507898i would say try to do a little more than just drawing a lantern with a face
look at real animals for inspiration like pic related
try to think of unique things that could be done with this pokemon being a lantern or connect the inspiration with something else like if it swam around in lava and ate little fire ball monsters and they dance around inside its belly or its a translucent fish that eats fireflies in a cave or something. maybe it cooks things inside its stomach so have it look like a cute demon shark thing with "hell" in its stomach full of cooked bones
try using organic shapes as it seems like you dont wanna make this an object mon, for example rounding out the edges of the prism, and make its features look more like something natural that just happens to be a lantern shape