This is pretty neat for your first drawing! I like the way you blended the fur and the sun.

What my advice is that to colour in manually rather than to use to fill tool, because the lines will look like it has white borders around them. In the 'Layers' Box, click the + button to add a new layer. Now you have 2 layers, name the one where you drew the lines 'Lines' and another layer 'Colour'. Put the Colour layer undernearth the Lines layer and colour it in!

You could also use a bit more control on the lines. I used to have the same problem too, but then again if you practice you get better and better!

Other than that, a nice start on Oekaki so far
