Making of my own set of characters was the idea that led me to creating my fairy seven.
I saw lots of illustrators there that have remarkable characters drawn in different situations and poses.
And I thought this to be good for both buyer (who may need a set of pictures of the same style) and seller (who may sell a whole set instead of one picture)
Finally, the last sun fairy was uploaded today. Now I'll have to wait for their vector variants to be approved and then see what happens.
If such approach to illustrations making proves to be successful, I'll make it a rule to always draw a set of characters instead of one.