self portrait: good portfolio development to draw in this style from primary source images. Can do layers of continuous line drawings in different pens, coloured pencils. No more that 5 min per drawing
Sharpie Sketches - Horses by ColossalBeltloop . I once heard an artist say that she liked to draw in pen because there was no erasing, and it helped her learn to accept imperfections. That seems like a good (albeit somewhat painful ) idea!