After the pleasing result with the first house, I attacked the second, and decided to go for a new colourscheme that I think worked well. I also used a bigger brush, which made a huge difference on the roof.

Shown here from different angles, with the original paintjob in the last picture:

I did this a while ago (only had a chance to post them now) and was so pleased with the result that I went back to the store and bought ten more of the piggybanks. With hindsight, I should have picked a few more, as they never got them back in stock, but 12 should make a decent sized village.