Someone used the Mahalo link at the right side of the page to ask a great question about riding balanced uphill transitions from the trot to the canter. Follow the link below to read the rest of my response.
What you are describing is a nice "uphill" transition. Here are a few things to consider to develop and ride these types of transitions with your horse.
1. The quality of the trot before the transition: Do you have the horse in front of your leg and nicely connected to your hand. One of the ways to check this is...