Starting a business

My plan is to use the things that I learned during my bachelor to start my own business. I want to further develop the concept I created for my final bachelor plan, because I believe that there is a market for it, and I want to see where I can take it.  

I first want to improve my prototype and then I want to get in contact with experts and users to further test my design. I would like to do an internship with a company that manufactures their products locally to get an idea of how that works and how I could set something like that up for my company. My plan is also to do follow a proper sewing course to elevate the level of products I am able to make myself.