Posting in newsfeed every few days or so. No stories at the time of Health Check. Using some hashtags.
Work on posting every day in your newsfeed. Aim for at least one post per day in your newsfeed and aim for 4-6 stories per day. Keep using hashtags. Aim to use 25-30 hashtags with each post.
I really like the close up shots of your instruments. Keep posting quality content like this in your newsfeed. Anything that you think does not meet this standard can be posting in your stories.
Consider asking a question with some of your posts to encourage more comments.