Top effort Sergio! You had better luck than I did on my first attempt. Kacper's colouring is perfectly good, and we all know Bruno can design, but I think the main problem lies in the natural issues that will occur in resizing to this level. Gaps and minor fit problems that hardly show on a 1/300 are gonna be a lot bigger in 1/100!
Kudos to you for solving the problems mate. I've got a second one printed and you've inspired me to have another go!