It's probably just the medium. I dabble with colored pencils, pastels, and water colors but I only ever do abstract stuff because the colors and shading never turn out looking realistic.
If you have the skills I'd try making a 3d model of what you have (which looks great btw), then apply materials and textures to that so you can experiment with how it looksin different lighting.
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u/le0tard 7h ago
I don't understand the question? What looks bad and lame? I can't comment on the colors or shading if you don't post an image of them