The registration page you show for the 'now' is what Joomla does by default. JFBConnect has an option to add the social login buttons automatically to this page at the top or bottom. It looks like you've configured that setting to 'Both'.
For the customizations you're looking for, that's not something we can really help with. We're not designers and customizations for each site are very specific to that site. I'd recommend contacting your template provider or another designer who may be able to implement the overall looks you're trying to accomplish.
As noted, you're currently using our "Integrate with Joomla Login" setting. If you're fully customizing the login or register pages, you can use our {JFBCLogin} tag to add the buttons exactly where you want within the page.
For more information, I'd recommend the following Joomla documentation:
docs.joomla.org/How_to_override_the_outp...rom_the_Joomla!_core
I hope that helps,
Alex