As a basketball player/shooter if you're not familiar with Mark Price I suggest you hunker down in front of a computer and find all the YouTube clips you can. A PHENOMENAL shooter and somebody I feel is overlooked when we talk about the best shooters to have played this game.
Top Left - Elbow slightly above the 90 degree angle.
Bottom Left - Ball releasing off of finger tips and guide hand off of the ball allowing for no guide hand interference.
Right - Hand directly underneath the basketball and elbow/hip alignment in optimal positioning.