What I'm doing. What do you think I can do to improve?

Hey everyone. Just looking for a little advice. My fb page is for my business and currently has only a little over 1.5k likes. I got a majority of these likes through a fb ad I ran. I also invited all my friends from my personal account to like the page and got some likes from them. I currently post relevant pictures every hour from 8pm-midnight and then from 8am-about noon or so. I usually include a link to my website or something telling people to share the post. I get some likes on the posts here and there but I really haven't gotten many new likes to the page itself. How can I change/improve what I am doing so that I can grow my page naturally? Thanks in advance for any tips and suggestions.

Try to get admin on bigger pages and share it on there and blue tag it. Photo comment on bigger pages

Well you can share some stuff's with fan pages in your niche that could give you some new fans .
You can start some contest to get likes and activity .

Getting your members to share it is a pretty good way to get more likes. You can also do what Doge suggested and maybe pay an admin a few bucks to share your page.

So by paying someone to share it. Do you mean like a fiverr gig?