This is excellent, thank you @Chip-Valecek and @TessW I'll be looking into color saturation over my weekend and I'll see about adjusting this piece in particular. And as for Eye shading, I definitely would have but I totally forgot so I'll touch that up when I attempt to saturate colors.
@Chip-Valecek I see what you're saying about the lineweight, that is one of those things I have to be thinking about otherwise I am totally oblivious to it. My pen/Tablet is pressure sensitive so some of them on the inside of say the tree may come out thin but if they are one stroke they tend to be the same thickness, as the robot is. But I can see where they can be thinner.
I originally drew this in ink for Inktober last year and I liked it so much that I decided to draw and paint it digitally. My parents were in town for the last three weeks, so I have not had time to post anything. In the meantime, I have completely forgotten how to post in the Illustrations subcategory, as I can't remember how I did it the first time!