PSD file should be readable and reworkable. Design keeps changing until deadline and your colleagues often edit the file. Would you like to spend half an hour describing which layer is what for? 2. Think about Physics. For Photorealistic Rendering and Consistent Workflow. Rendering software is based on physical model — Why not us? 3. Learn How It Works, Not Point and Click. There are many tools other than Photoshop. Nuke, After Effects, Flame, DaVinci Resolve, GIMP, Krita. Once you learn how things work, you will only need to learn operating software. This presentation is work in progress. Please send me feedback if any. Thanks!