All drawings posted on drawing-of.eu website you may use for private purposes at home (printing, colouring etc), or at school (for example school presentations, or printing as “colouring pages” for school children).
If you like to use image on your website please link back to: drawing-of.eu
If you would like to use image for commercial purposes (like advertising, paid content etc.) you can purchase a license for 10 USD.
If you like to purchase rights to use image for commercial purposes (royalty free license) please contact me at: email@example.com
If you need illustration of some other object to use in school also feel free to contact me. I will try to draw it and post on the page. 🙂