I did it with different colored pencils. I think this is an excellent craft for kids to learn about mediums and blending colors. It was really fun and I loved it. It can help with anxiety and bring a zen kind of mode. For the over all picture of it, I think this would be a fun family activity and you can make it as decorations. You can frame it too.
Time: minimum: 30 mins maximum: 4-5 hours
First, to make the ribbon form just draw a squiggly and another squiggly next to it and then erase the x and your done with the shape! Using different mediums (colors as in: light to medium to dark) you color the shape. You could use compatible colors to make the ends brighter or the middles darker. ITS THAT EASY!!
mak the ribbons have light to medium to dark, they seem more real that way
figure out where the light is coming from
use compadible colors for the really dark areas (red&green, blue&yellow)