With a little discipline you can improve suppleness, obedience and gain extra marks by simply making a clear difference between a circle and a corner. Your circle should start and finish at either A or C and should not have any straight sides! Think about riding a diamond shape, touching the four points for no more than a couple of steps, NOT STRIDES!
The circle is complete once you arrive back at the marker (A or C). You now ride straight towards the corner; rather than simply continuing the circle and cutting the corner. In this way your horse will maintain his balance and perform the next movement with greater ease; not to mention those extra marks available from the judge! Click Here to Read How To Ride Good Corners