There are 5 fundamental points to throwing a disc: grip, stance, snapping your wrist, angling the disc and pointing on the follow-through.
You can remember it as GSWAP.
Rob and Brodie have demonstrated these points or similar ones.
But have you seen players whose forehands curve over with too much outside in? Despite you mentioning these points? Do they look like this?
GSWAP needs an update.
Number 1: rolling your wrist under, not over
Number 2: moving your elbow through.
These two ideas are linked.
You can practice the first point now: hold a disc (or an imaginary one) in forehand grip, but hold it vertically so your palm faces down. Pretend to throw, and finish with your palm up. This counteracts the outside-in curve that is a regular problem.
To assist this correct rotation, you need to use your elbow. If your elbow is locked in next to your waist, rolling your wrist under is awkward - your wrist prefers to roll over from palm up to palm down.
So free your elbow!
Get into forehand stance again. Hold a disc in forehand grip with your palm down. But this time start with your elbow out, back and bent at 90°.
As you swing your elbow forward, you have more power. Your wrist will more naturally rotate under, from palm down to palm up. Follow through with your palm up.
It looks more like this.
Or you can watch Rob and Brodie.
Here are the 5 updated fundamental points to throwing a forehand: grip, stance, rolling your wrist under with snap, swing the elbow, and pointing palm up on the follow-through. You can remember it as GSWEP.
Thanks to Mama for demonstrating the throws.