Tags: Use of relevant tags is important from the SEO perspective. It helps the search engine track your post based on the tags you use.
Grow your Blog Organically. Don't force/ask anyone to share, follow or comment on blog. Just focus on promotion.
Image speak - A lot of bloggers tend to ignore this, but the images on your blog speak a lot for what you write. Use good quality images and make sure they express your written stuff in utmost simplicity yet precision.