After the first sanding, I’ve a nice bit of colourful chaos going here. The next step will be covering the whitish areas with a similar mixture of the previous application, but leaving the more brilliantly red/blue areas as they are. This will establish what stays visible and what will be covered.
When I’ve got that background worked in, there will be another period of sanding with a finer block so that it should seem very polished.
Then I can go ahead with whatever comes next, because I have no idea yet. 🙂