Thank you a lot!

@nruddock:  concerning the apps for visualisation you told me. great idea, I will take alook for this. but for other reasons.

my topic here is only to make a cover illustration for a evaluation study I have done. the study was hard work, and now I would like to finish the final report with a cover illustration, done by myself. just to show my creativity...
so everything in this project report is a product of my own and I don't have to use any third party image. a little bit crazy, I know, but it is my baby now... ;-))