Hi!
I am 17 yrs old and I want make some money on concerts. I played recital and now I'd like retry it, but I would be happy for a part of a program. I have looked for some requests for pianists but found nothing. Is any chance to find a person in CZ who would want me to just a small part of concert? Sry for my english..

Greetings
Great question and in my personal opinion, this depends on your country and other such issues.
Because I am not sure of the musical situation within your country, the best advice I can give you is to do what I am doing right now:

-I have a files of every single community university within the USA and every single community/professional orchestra worldwide
-I email the piano department/orchestra directors to see about possible concerts and such
-I also try to contact local performance venues such as churches and others for concerts

In addition to the above,I would highly recommend for you to get a website and to post on it your bio,calendar and such. Check my site at http://www.avgusteantonov.com for ideas

Also,start recording your concerts and such. Then you can start selling your CDs at concerts and the like. For examples on that,check the "Products" page on my site and my artist profile on this very site.
And of course,don't hesitate to order CDs