I've been trying to make my portfolio navigation easier to use, and I ended up with this method:

Rather than having an individual gallery for every single subject (like Forests, Mountains, Seascapes, Etc), I decided I'd like to share my work based on when it was created. I enjoy the fact that a viewer can see the progression while scrolling through the galleries.

I curated these galleries to represent the wide variety of subjects and mediums I work in. On any given day, I may be drawing, or painting with different mediums, and I feel like that is an important part of my process.

For now, I'm leaving some of the more specific themes as individual galleries (like Lord of the Rings and Digital Art). Down the road I may change it up.