Quote: "here is my first gun"
Right ill tone it down a little, people seem to be overlooking the fact your pretty new to this. You will not get paid for that. Like any other job you need practise, training before you can ask for money.
Firstly browse through the extensive resource list in this board. That will provide you with all the information you need to get a good start. The tutorials alone are gold thier. Research is next up, use reference pictures for everything you can while starting out. Later on when you settle youll understand and know whether a object could/should look like to the rest of the flow.
Theres no rush, and no shortcuts to get the experience you need to be able to produce media you can sell.
Thats all the advice i can think of right now. If you need help then just speak up, Programs differ in Ui's and fuctions but the general idea is the same. So we can offer a advice on a wide range of subjects. Though we are tempermental so i suggest reading up on it and googling it before you ask a question
-Con