To contact me, tap me gently on my shoulder, pull lightly on my sleeve or shout as loud as you can. If none of this works you can always send an email to my firstname at ivarhagendoorn.com, that is:
ivar [add at] ivarhagendoorn.com
Before contacting me please bear in mind that I have a full-time job in the global financial markets division of a leading investment bank and that I currently devote all (or most of) my spare time to my own artistic endeavours. Consequently, it may take some time before I can reply to your request. I do my best to answer all email within two weeks of receipt (unless I'm travelling in which case it may take more time).
However.... don't let that keep you from contacting me! I'd love to hear from you.