Some fairly simple exercises are good for tuning your skills.....like flying figure of eights, first with nose pointed away from you all the way, then with the nose facing you, then with the nose pointing in the direction of travel. Once you can do it perfectly, switch to ATTI mode and try again...now you have to make corrections to allow for the wind pushing you around. Try flying in a circle round yourself with the nose facing you, and keeping a constant distance between you and the drone. All good practice for fine control.