I'm going to jump in here if you don't mind because I have done a bit of this with my students at uni and hopefully I can help?
First of all, lovely illustration work.
Having the layout with tiles is good because it puts no barrier between the idly curious and your art.(They don't have to click anything to get what you do.) That being said I think you could possibly shorten the introduction and keep it to; what this is, who you are and a call to action -which you have there- but shorten it up a little just so, especially on mobile devices, they don't have to scroll as far to see more art. People are soooooo lazy when it comes to websites and its best not to make them work for anything.
The same goes for the about page, I think you could hit the beats of what you want to say and then add some kind of a "More about me" paragraph below for the curious. Its not too silly or anything but I'd say Business then Play, if that makes sense? That would be stuff like the explanation of your name and other details that make you feel like a real person
Which might be a job for Inigo?
Sooooorrryyy couldn't help it....but its good stuff, haha.
I am also noticing the logo issue but it's only on the title page that doesn't seem to show the image. The rest seem to work fine.
Finally maybe a bit too much of a technical note but if you have the money to buy an SSL certificate for the hosting of your website that always makes it look just a skooch more professional. Its the difference between the browser reading: http, or; https (Small I know) but it stops some browsers and malware scanners from throwing up a big scary "THREAT DETECTED!" page when they can't verify the certificate and that might save you a job down the track cause you're not scaring people away one in one hundred times.
I like the little Mamet/Opossum thing on the contact page, that's cute :smiling_face_with_open_mouth_cold_sweat:
Hope that helps at all,