Digital Portfolio Examples

I've been looking at a few examples of digital portfolios and this one caught my eye. His work is very different to mine but I like the way he's set it set. I like the square format however I'm not sure if we're allowed to do that and I'm not sure if it would suit the format of my work very well. What I also like is the coloured titled pages before the images. He's split his work in to categories and gives it a bit of a structure.