1. Bring in a photo in a new presentation in the Keynote iPad app. I like to go to the image editor and change the opacity to 50% so I can see my black lines better.
2. After I create a contour line drawing (see our funny Fugleflick about this kind of drawing) scoot the photo off to the side as a reference. Change it back to full opacity so you can use the eye dropper tool to select the actual colors for your portrait.
3. I used the fill tool for adding colors. I set the colors to semi-transparent so I could layer in base colors, highlights, and shadows. I like how the tool requires you to make a shape then it fills. Once you get the hang of it it's very quick and creates a loose painterly look. If I make a mistake I could hit undo or use the select tool to find the stroke and delete it.
Variation: Keep it simple
I really like the clean and loose look of the fill tool. I like the little edges of white that occur naturally when you try to make a shape to fill. I also like that when you keep the color semi-transparent, you can simply make shadows by layering the same color again over the shapes you had already made. It becomes darker the more the color is layered. It's fast, easy, and very effective.
Resource: Learn about Contour Line Drawing from Grandpa Pencil (Fugleflick)
Join in anytime and tag your art with #KeynoteDrawingChallenge & @fuglefun