I'm working of face drawings in my online multi-media art class. The instructor likes students to use colored pencils that are harder to erase, because she believes the mistakes are instructive and part of the learning process.
I started this yesterday and finished it today. In the hand-drawn original, one eye was a bit smaller than the other. So, I've changed the size of the smaller eye digitally and added enhancements, including the background, through Photoshop.
This drawing is an improvement from where I started in pencil drawing...but there is more road to travel with hopefully lots of continued improvements to look forward to.