"Don’t worry about your sketches looking perfect.
Bird feet are troublesome to draw if you don’t understand how they function, so I made these sketches to help me figure it out. I used actual owl feet that I borrowed from the museum.
No fancy drawing techniques were involved here. Just direct observation and scribbling down what was in front of me. My sketches are messy and unfinished, neither of which is a concern at this stage. The main thing is to explore and learn along the way.
I mention this because I used to worry about making mistakes and would even tear pages out of my sketchbook....sometimes to the point where there were almost no pages left! I was always trying to shade everything perfectly and turn every page into a Rembrandt masterpiece. As a result, I ended up with piles of stiff sketches that were of little practical use.
If you have a similar problem, try drawing with a ballpoint pen. A regular Bic will do just fine. A ballpoint pen removes any temptation to erase your mistakes and so you won’t fuss around making timid lines. You'll have no choice but to commit and your sketches will be much improved as a result.