I have this problem of changing and erasing and redrawing sketches a billion times until I will eventually grow frustrated or the paper just gives in and breaks underneath the eraser - so a whole while ago I started doing sketches with unerasable gel pens to keep myself from trying to change things constantly and forcing myself to finish a sketch and move on to the next.

The previous sketches thrown together into a single image and quickly (and messily) colored as a size reference for siblings Gekko, Rukh and Aiden.