These are steps for doing a sketch card for my son. I typically sketch out a concept on a separate piece of paper in order to get the idea out of my head. Then I re-draw the image on the card itself. I let the ink dry fully before erasing the guidelines to avoid smearing them. It also means that the markers won't smudge the inked lines as well. The color is added and I go back over some of the line work in order to make some of the lines pop.