Before you start posting links to your own blog it is generally a good idea to contribute meaningfully in other topics. Meaning, posting comments that add to discussions, and posting interesting posts that are not links to your own things.
Then post a link or two to something interesting from your blog.
Then continue contributing things that are not from your blog.
And only occasionally posting your own things.
I don’t know where the exact limit is for how often posting links to your own sites is acceptable. But generally I think as long as you can look over your own list of posted links and it is a good mix of not just your own things but also plenty others then I think that is good.
But obviously, don’t post links just for the sake of posting. Only post links when it’s something that you think will benefit others. And don’t make too many posts at a time either.
Generally, be a member of the community, not a spammer :)
The FAQ describes karma: <https://news.ycombinator.com/newsfaq.html>
Both are linked at the bottom of most HN pages.
As for linking a blog post: if it's relevant to HN, write it and submit the URL with the original title (editorialised titles in submissions is a big no-no).
About 3% of non-spam submissions hit the front page, so your odds are fairly low. Good stuff often does make it through eventually.