I dug up this render that I did a year or so ago, I used Richard Kuchinsky's Footwear Rendering tutorial as the guideline. Check it out here. Seeing his work for Hummel back in 2006ish was a HUGE part of my decision to go back to school for design. I'm still on the search for his Hummel Mid Characters in my size!
The original render is below, I spruced it up a bit in the new one above added some value and tweaked the proportions, I think they are still a little off but it will do for now.