(Dörte Roßmann - 4 maanden geleden)Hi mister vd Heijden. I am an freelance illustrator from germany. Currently I have the pleasure to work on an coloring book for kids, the topic is farming. I have to illustrate various machines for this book, like tractors, pea harvesters and stuff like that. Is it okay for you, if I took your great videos as references ressource? Of course I can send you some examples, if you wanna get a feeling from my work. Normally I took photos on my own if I need references, but some of those machines are pretty special and difficult to find. Thanks for your time and your help. If you wanna I can send you some finished books in the end, as a little thanks for your help. Greetings, DoRo