For a good rein connection, the wrist should be part of the straight line that extends down the rider's arm. So the knuckles should point towards the bit as well as the rider's arm. Only if it follows that line exactly can the connection be true.
To successfully maintain the elusive forward feeling hands, imagine that you are pushing a shopping cart as you ride forward into the bit.
Horses speak through their actions. Try to listen to what they are telling you.
Spend time on the basics, such as straightness and suppleness, and the more difficult movements will fall into place naturally.
In the sport of Eventing, ensuring that our horses are truly fit for our level of competition is one of the best ways to prevent unnecessary injuries.