Portfolio
Sketchbook










My sketchbook is where I get out ideas as often as possible.
Children's Book Illustration
I am currently seeking children's book illustration representation.
Coming from a desire to build magical worlds for kids and my own relationship with my lovely 8 year-old stepson, all of the work in this section of my portfolio is designed to appeal to children, tell a story, and draw both adult and children readers in.
In order for narrative illustrations to feel like they matter, I've developed story threads and character concepts to guide the direction of this portfolio.
My process involves sketching with a fountain pen in my sketchbook. Direct ink, no pencilling. I then scan my sketches, clean them up, and add digital colours and textures, painting using minimal layers to give each image a handmade feeling.
Fountain pen sketches in my sketchbook.
I find that nothing can replace the liveliness of sketchy ink lines in my notebook. Separating the sketching process from painting allows me to focus on each step without distraction.
More examples of ink sketches scanned and turned into narrative illustrations.
Additional spot illustrations/character designs
If you are an agent representing illustrators, a writer, or anyone who'd like to get in touch about my work, please email callum@callumisaac.art. Thank you!
More Illustrations












Paintings and Fine Art
Ink and watercolour sketches done in 2026.






All of these paintings were created in 2026 using either gouache, oil, or acrylic. More on them can be found here.
Graphic Design









