I started here. You’ve got to start somewhere after all.
Next, I got in some of the foreground
I got in the rest of the figures, starting with the foreground and working backwards.
The next step is to get in the colour. As you can see, I use a Pentel aqua pen with some ink in for colour.
Then I work in darker tones. Here you can see I’m working a nut brown over the top of the yellow base.
I get other blocks of colour in and start adding shading with a very dilute black. I work this up in layers.
And here is the final thing!