Thanks. Yeah, Wave is really good, but WheelieMaker's style is more simple and fits better with my style.
What all the pros have told me is basically just practice. Although always try new ideas and be open to suggestions and constructive criticism. Looks great!
rather than spacing out the lines perfectly as though it's a wood grain, try to layer them so it seems more like the front/middle is one with the ground and all the lines behind it give it a sense of depth. Kinda hard to explain so i'll draw it. So basically you just want the bottom of the hill to blend with the ground a bit more, and with what you were doing it wasn't really giving it that effect. Hope this helps