I was on the road this week, doing a little tour of California. Three cities in three days. San Francisco Monday, L.A. Tuesday, San Diego Wednesday. Adobe’s MAX conference was this week in LA, where the creative software giant unveils its latest features.   Well, everybody’s got challengers, and one of Adobe’s is a startup called Canva. Canva has emerged to help regular folks add high-end creative flair to their presentations. Even better, it was founded by a young woman in Australia who was looking for a way to make yearbooks in the digital era. It turned into something much bigger than she envisioned. I sat down with Melanie Perkins at the New York Stock Exchange recently to talk about how how her design project turned into a profitable, venture-backed brand that’s earned praise from legendary tech watcher and investor Mary Meeker among others.   This week, my one-on-one with the co-founder and CEO of Canva, Melanie Perkins.