[z3t4]

You should talk to your direct manager and tell him/her that it's something you wish to work with, and you can do that instead of whatever you do at your job right now. But if your boss says no, you can ask if it's OK to do it as a side business. It's important to get on paper that it's a side business and your boss has approved it. If your boss also say no for your side business then you can still do it on your free time (IANAL) your employer can not decide what you do with your free time, but if they find out they could fire you, so it's probably not a good idea then to try to sell it to your current employer - or you can lose both your job and the sale.