Assuming you're trying to raise interest in your game among non-developers, here's some ideas:
- First, and most importantly, use engaging visuals (images, especially gifs). I cannot emphasize this more. This makes your posts more interesting than just a bunch of text, which personally turns me off to read. Cover images are also nice. I don't personally use them due to keeping my focus on actual development, but the more visuals the better.
- Don't use bullet point lists for new additions, except maybe at the end. Write as if you're trying to engage an audience, not as if you're trying to bore them to sleep. (I'm not saying to write unnecessarily long paragraphs either; keep it to the point, but make sure you're being interesting about it).
- Don't feel limited to what's 'normal'! For some reason my devlog post titled Coffee Break got more views and boosted my project more than any other logs, despite having almost nothing to do with development. Why? I don't quite know, maybe it's because it was unusual? Different? Personal? I'm still trying to figure it out. Besides this, indie developer legend Toby Fox used posts like this to crowdfund his game Undertale. Don't feel limited to the typical spitting-out-facts approach. Try something fun every once in a while! There's no shame in doing it at all.
Hope this helps, and hope your game development journey goes well!