You have the plan and the goal in front of you. Well done for now! Let's come to another important step - feedback.
There several way you can do that:
- ask your friends and relatives
- get the survey and ask people what they think.
How to conduct the second one?
Target audience: get people from your professional networks (linkedin, xing, etc) or social networks to participate, ask your friends to share the link to survey with their friends by e-mail to have as many responses as possible.
Tools: you can use free online surveys as a vehicle for that. SurveyMonkey is one of those tools that will be helpful for you.
How: if you have never created any questions for surveys in your life, here are some tips and free resources for you: resource 1, resource 2 and resource 3. There are a lot more, of course. These are just to start with.
After you have a feedback, have a careful look. It's great, then cool and well done! If you found it a bit different from what you thought, why not to have a look what needs to be modified there? what market really expects from you? Use it as a piece of advice.
I would say Dalai Lama's quote about saying something matches a good product/service to offer: