Drawing from Negative Space: Bike

This drawing made me so frustrated. I was trying so hard not to focus on what I was actually seeing, but it was so difficult. Bikes have so much detail that it's hard not to want to draw positive space. I think it was also really hard to draw because it was upside down so the proportions were different from what we'd normally see. I put the question mark because I only semi-drew from negative space. don't get me wrong- I tried.