Find the right distance
Ukemi: when torimi looses concentration, or when you feel you make a good chance, attack immediately with tobikomizuki jodan. Use the strength of your legs -especially in the hollow of the knee- and strength originating in seikatanden. When concentrating power in seikatanden properly, the left hand will withdraw all by itself. Tobikomizuki implies withdrawing the hand towards the chest, rather then to the hip. It will enable you to re-attack immediately.
Another point of attention: It is common to use only the power of the upper body, especially the right arm. One tends to leave the lower body where it is.Tobikomizuki is aimed at the chin. Try to think of the target as being a few centimeters within the chin, thus forcing the lower body to move forward.
Torimi: at the moment ukemi attacks, you should feel as if you are attacking as well. By turning the hip slightly to the left, you can move the whole body sideways: taisabaki with suriashi. It shouldn't feel as an evasion. Taisabaki should be performed with the intention of attack. Concentrate on seikatanden to be able to attack swiftly and perform a left hikite (withdrawal of the hand). The movement performed is jodan harai uke ending with the right fist pointing upwards from the elbow en re-directs the fist ukemi past the head (nagashi uke)
Ukemi: try to attack suigetsu (solar plexus) with a left meageri chudan.
Torimi: At the very moment of attack you come forward. Your right knee and your right elbow presses against his leg. Attack simultaneously with a right uraken uchi and a left nakadaka ken towards the inside of the upper leg, thus preventing ukemi from kicking. Bow down slightly to evade an attack towards your head and attack at the same time the chest of ukemi with your forehead. Kiai.
Picture 7, viewed from the other side.