https://danielmiessler.com/blog/so-you-want-to-start-a-blog

https://danielmiessler.com/blog/why-everyone-needs-a-blog

This kind of addresses the "how do I get over $X": https://igorstechnoclub.com/why-you-need-to-blog-more-even-i...

I took Meissler's advice after reading the "Why Everyone Needs a Blog" article. I had already come to "Igor's Techno Club" ideas by the time I read it, but Igor is very convincing.

I think your motivation and content ideas are perfect. You will get better at writing by writing - that appears to be the only way to become an accomplished writer. As far as not being experienced, Mark Twain once wrote that "Experience is what you get right after you need it". Just do it. Be a human.

My blog: https://bruceediger.com/

With reference to OP; you'll notice on this site and elsewhere on the web, the best posts are very frequently of the form - "I just figured out this thing and I'm writing this blog post to share my experience while it's fresh in my mind". We could speculate on why that is but I imagine it's because they tend to be much more relatable and actually more helpful to anyone searching out how to do something for the first time. Since you'll likely directly address the questions an expert will have forgotten they ever had.