Was employee # 3 & marketing director at WordStream (Inc. 500 SaaS startup) now own and operate a search engine marketing and content marketing company. Write for various industry publications such as Search Engine Journal, Search Engine Land, SEO Book, and have been cited by publications like USA Today, Fox Business, & Media Post. Was an instructor for Marketing Profs University, and a speaker at SMX.
I agree with Humberto just firing off a press release isn't likely to get you much in the way of valuable press mentions.
This is a really good guide on DIY PR:
http://okdork.com/2014/08/12/how-to-do-pr-for-your-startup-without-spending-any-money/
The Facebook grid tip is a good one, Canva is also a good (pretty inexpensive - images are free or $1 an image I believe) tool to grab an image you can edit / layer text on top of for things like social media posts / blog headers (they have "Facebook" specific sizing and its built to be editable by non-designers):
And there's a good list of similar tools here:
https://blog.bufferapp.com/tools-create-images-for-social-media