I colored the Koi up with YR21 and then started layering from the inside edge of all of the scales with YR23, R22, 24 and 27, then I went back over with YR21. On the fins I layered the same way and added in R39 at the base to make it darker. I then added shading with the R22 along the scales. The "water" I tried to match some of the water splashing on the paper and used the W4, 6, 7, 9 series to try to match it.
I used crystal stickles over the water colored to add some shimmer to match the paper, and also used crystal effects to make the fish all shiny.
Thank You for looking. Close Up and more information on my blog.