1. Always put alternate text with your images. Search engines love this.
2. Make titles for each paragraph. Make them H1 or H2 or H3. Search engines also love this, but are indifferent to simply bolding words or sentences.
3. When you make a word or sentence a link to somewhere else, this gets lots and lots of google love. Google uses this to figure out what your site is about, almost more than any other aspect of SEO text formatting. Linking to other parts of your website/blog will bring lots more google love long time.
That’s all for now. I have to get back to work.