Best bits: Making a golf game is a very difficult undertaking. It's physics-based and fiddly. Creating a workable golf game in a short amount of time is a great achievement. There are some fun design twists to the various holes, such as barriers and exposed parts of the course.
Ideas: Have a look at how other 3D golf games help the player understand how much control they have over a shot. Some ideas you might like to try include having the camera follow the ball, using the mouse to set the trajectory, and having more visuals to predict the ball's direction!
Thanks for submitting this game to the jam!