Simple Qt games

Hello, all!
I am not a programmer, I am a physician, but in the evenings I have a good time writing simple games for Linux based on Qt. Those, who reads in Russian, can look them here.
Or on Qt-Apps.
I shall be grateful to the real programmers for any advices on improvement of my games' code.
Thanking FAQ of this resource, at last I could understand with a problem of jpeg loading in my program, Klikit, transferred on other computer. :)

Problem is that you must insert your jpeg as resource file. I think.