Callum Chapman
Callum Chapman is a self-employed blogger, author, graphic designer and illustrator. He is the founder of Circlebox Blog, and is also the founder & co-owner of DesignGiveaways.com, a design blog dedicated to giving cool products away! Drop him a line at Twitter!
Tutorials

Showcase of Textures in Print Design

Design & Build a 1980s iOS Phone App: Design Comp Slicing

Design & Build a 1980s iOS Phone App: Design the Phone Screen & Settings Screen

Satisfy Your Sweet Tooth With These Delicious Vintage Advertisements

Design an iPhone Bank App in Photoshop: Part 3

Design an iPhone Bank App in Photoshop: Part 2

Design an iPhone Bank App in Photoshop: Part 1

Twitter Background Design - Great Tips and Gorgeous Examples

40 Free Headline Typefaces

Mobile UI: How to Redesign the Spendometer iPhone App (Part 1)

Colorful, Psychedelic-Style Digital Artwork

Interview with Timba Smits