Hello I´m a rookie game designer who has learnt how to use Unity in a basic way, and I´m looking for a proyect in which I can learn how to properly use it for a game designer. My field of expertise is the viability of a proyect.

You can look at the levels that I have designed recently with the editor of Portal 2. 

 http://steamcommunity.com/id/playjogame/myworkshopfiles/

Meanwhile I'll be keep practising with the same editor and others.