Nice clean design, which is the current trend on sites.
https://www.smashingmagazine.com/ is a great place to read about UX best practices.
Comments on specific things on your site
The FIRST text is black in the header, which is hard to read, looking at using white.
Look at making the width smaller. The size of the header makes the right third of the body empty, so a lot of white makes it look like there isn't much content.
If you're using Wordpress, which I like for ease of maintenance, it's always being hacked (directly or via a plug-in). To avoid someone hacking your site and delivering malware, keep your plug-ins/WP up to date. So check weekly.
For everyone using WP, WP Mobile Detector plugin just patched a 0-day this week that hackers used to spam porn. Please update. Here's the details
https://blog.sucuri.net/2016/06/wp-m...-the-wild.html