I posted some photos of the process here isugi.diary.ru/p191414430.htm?… but the text is in russian. If you want, I can explain any part of the process in detailsFirst of all, I used sandpaper, lots of it! First I used coarse sandpaper, then medium; then I covered paper mash with putty (not sure how that thing is called in english. Other words I found are "gesso" or "filling cement"), it's that thing used on walls, as far as I know. After covering it with putty i used medium and fine sandpaper, making it rather smooth. Then I colored it with acrylic colors. By the way, using mixed (not one-colour) paint hides some flaws