>>43486218Looks like a hyper-corrupted Bulbasaur evolution.
The two greens are competing for attention. If you make one of them the focus, it may make for a more appealing design. Using Treeko as an example, the main color focus is the grassy green, while the accent color is the tail's forest green, and contrasted by the seashell red belly and honey yellow eyes.
The two colors you are using at the moment both share the spotlight equally, blurring them together. Try keeping one constant, while making the other a bolder shade.
Alternatively, shading is always a cheap cop-out that may make it easier on the eyes. If you are using photoshop, use the burn tool to add shadows and see how you like it.
