Overall, I'd say that this is a very impressive piece for a Simple 'mon. I like the depth of shading and gradient here, though the differing styles are a bit confusing.
The lines in this are neat, concise, and consistent throughout the whole picture. I like that you put Surskit in its own environment, perched on a lilypad and looking all adorably innocent. Some things in this are inconsistent, though, including the realism of the water in the background to the cartoony nature of the lilypad, to the complete lack of shading on Surskit that doesn't match even the cartooned lilypad. Other than these controversial differences, I love this image and I find it to be adorable.
The coloring is so pretty! I love the gradients on the lily pad as well as the shading to make it look sort of rippled and wrinkly. The water looks very nice in the background, as well. However, I'm confused as to why Surskit doesn't have any shading... it doesn't seem to match the rest of your image.
Yup, Surskit looks all right to me!
1. Make your shading consistent!
2. Give your Pokemon a more dynamic pose instead of just sort of sitting there. It makes for higher points!
45/100, which is more than enough to ensure that Surskit is caught!