Vine: Use a tripod to keep videos steady as a shaky camera can be annoying.
Tumblr: Know your post types and make sure you choose the right type for your content.
Blogging: Keep blog posts between 500-800 words so that it is not too long that you lose readers.
Remember, each industry is different, so what works for one business may not work for another. Make sure you experiment to find the right formula for you and if you need a hand then contact us as we offer social media marketing.