It sounds like you have all the right ideas and motivation to get going.

I appreciate how you empathized the importance of high-quality content and keeping it interesting as well - that's most definitely the way to go from what I can gather. In regards to your worries on how people will perceive your writings... not only is it impossible to tell without having posted it, and worst comes to worst you can use the feedback provided to enhance your writing and move forward stronger. You miss all the shots you don't take.