Thanks for encouragement! I'll try to provide more.
Well, I tried to read info on licenses, but still a bit confused about license. If I state that my models or any parts of them could be used, modified, meditated at for inspiration or utilised an any other way - is that a GPL license? How should I denote it - by putting a model somewhere on the web along with readme.txt with text provided in Wiki? Or by just saying "I choose GPL"?