Optimize images by mentioning the ALT Text and a short description of the image in your blog post to rank better in Google.
E-commerce bloggers can gradually choose to write curated content from other websites/blogs. That always helps because a buyer will generally not spend much time surfing. He/she will appreciate it if you provide most of what they are looking for.
Broken links irritate visitors and can badly affect your ranking. Check and repair all such links on your blog.