technical description  

Hi everyone
I'm a graduated student and I want to apply next year for master degree in US. I have to prepare my portfolio and I have to do some project. now I'm designing an device wich it is new and completely creative.In fact it is similar to a portable washing machine. actually I have a lot of problems. first I dont know any thing about technical description and parts. I dont have a professor to help me because I'm graduated now.but I sketched something that I can not choose final sketch. can somebody help me?