THIS IS REALLY IMPORTANT!
If you are flying a kite that has not been trimmed properly then it could ruin your kiting experience.
If you have been taught by us then you will understand the importance of this, but if your kite oversheets (falls backwards out the sky) then you need to set it properly before you kite and this is called trimming your kite. A kite that is not trimmed will work against you in every aspect of kiting and almost make it impossible to stay upwind.
So have a watch of this video and hopefully it will make more sense.