Illustration - Speak Colours
Hey! This post's a little over two years old now, so some of what's here might be out of date. Still worth a read, but if anything really matters to you, it's worth double-checking against a newer source too.
Similar to some of my older illustration styles, 'Speak Colours' uses similar tools and transformations, with a slight twist which really brings the colours to life and allows for more variation and complexity, whilst maintaining a similar aesthetic.