Hi All,    I have tried digging into these forums already but still struggling to understand how I should proceed. As I am now quite comfortable with AF Photo, I am beginning to dig into Designer, and worried about my files not being usable by Illustrator.  Hoping someone can help me to understand some issues / mistakes I might make before I start digging into Designer? What should I avoid if my intention is to create files usable by other graphic designers who are using Illustrat