I think this works great as a website - good use of screen space with minimally required scrolling, except on the contact page.
The only remark I have about the website is that it sometimes jumps when the menu bar appears.
It’s a WP theme so work on branding it first, then ask for feedback.
I agree that the illustrations, while they are not bad, confuse a bit from the work you do because your renderings are what sets you apart.