Nice clean lineart~~!

Now, you can color using 2 different methods: Underpainting and Masking. In underpainting, just switch to layer 0 and do all your coloring there. This is useful if you did all your line art in the watercolor brush. In masking, switch to mask with your lineart color in the box while in layer 1, so you can color the main character and do your background later on layer 0. I'm going to use the masking method here, but the coloring techniques apply to both methods. ^^