A cute ABC owl, would make a perfect project for a child's bedroom.
I took a heavyweight piece of watercolour paper, it really is the best surface for these pens. I used a 3 sizes of lids to create the eye circles,(you could use a compass) and then freehanded the curved lines of the body. These are very simple shapes but if you are concerned about them then use a French Curve to get a neat line.
I filled in the whole of the owl with 'letters' using a childrens chunky alphabet stencil.
i then outlined everything with a black fineliner
I took a slightly darker shade of each colour and used it to outline the letters, I felt this was enough to make them stand out without outlining them all in black, which may have been too harsh.
At this point it needed a little something more, so I added a small scallop pattern to the black lines of the owl, the letters 'outside' the owl and the branch/leaves.