Mmm here is a shot of the original result with normal maps... one can still see these strange artefacts :/ (around areolas (sp.) mainly, this is where the bump has the most change) Also, i made tries with lightning from top, and either sides, with gain values of 0.4, 0.04 and 0.01 and the artefacts appear in every case... 0.01 (or around 0.007) seems to be good settings for bump size in this case... Help :P