Quote:
mesh covered with stripes with Polyetherane
Even though there is an attempt at shading, the black outline makes it look really flat.
The best thing would be to have no lines at all and let shadow/lighting/colors define the different areas and pieces of the shoe. If you look at a real life object, there's no black outline around it, so a true rendering shouldn't either. Thing is with the border things are usually easier to understand quickly. If you look at Arch's submission, there isn't much black tracing on the shoe. Parts are defined by colors/contrast.
The few times I use a thick line in my drawing is if a piece of the shoe is in front of an other, on a different plane or to define the overall shape of the object I rarely use them inside the object. But then again, some do and it's entirely up to you to figure out what you think fits your style and looks best. But you should try messing around with different line width and weight and see what you like. I personally like to make the ends of a line darker then the middle portion of the line when I sketch. You could also use another color than black for the outline if it's a colored part of the shoe.
Hope this helped a little. Good luck with your submission and keep it up!
-T
Wanted (10): The Kobe (playoffs), Nike Zoom 2k3 (any white based colorway)