Well, my rules for the order is:
1. FPS Limitor
2. Input
3. Collission check
4. 3D Render
5. 2D Images/forms
6. Draw Text onto screen in/outside forms
7. Flip
1. FPS Limitor
2. Input
3. Collission check
4. 3D Render
5. 2D Images/forms
6. Draw Text onto screen in/outside forms
7. Flip