Your website honestly looks very boring and amateur. Plus, your portfolio has too many of the same kind of images. You should be showcasing the best of the best, not a bunch of decent shots of the same thing.
As for what to charge, you need to determine your cost of doing business and what you want to make. We can't tell you that.
In order. You can mix it up on your social media sharing. Don't make things more confusing for the client.