So, I went ahead and checked out your site on both my phone and on my browser. I was pleased to find that the site was very responsive (worked well on both sites and was fluid between resolutions) and I did not have a problem navigating between either. This is a VERY professional looking site, and it definitely gives you an air of credibility as an author. I easily found where I needed to go, and the professional looking "covers" that you have do most of the work in making your site look good and professional.
With that said, I am not a fan of the "avocado" green. It looks a little tacky to me, but that is me. I usually love the green/purple/yellow color schemes (big fan of the Joker) but that shade of green muted the other colors a little too much. Beyond that, I really like your scrolling marque at the top, alternating between different projects and books, but it was going a little too quick. If you could slow that down it would give readers time to actually take in the details before being presented with something else. It was almost like having ADHD. I would maybe add an "about" section, but your limited menu at the top does force your readers to read and support, which is a good strategy.
Beyond this, and overall, you have a very excellent page! I think you have a knack for design and an understanding for what readers/market expects. I think this site should treat you very well!