My diddy works like this and the begging of a match i start of with a dash attack or a a f-air or a b-air. When i get the bananas out i throw them and then grab back and forth like 3 times. usally when i get the opponet to like 70 and where close to a edge i just diddy hump DI to a edge then I do the up diddy hump attack. I also u barrel canceling when my oppent takes control of my bananas so it's a win win for me. I feel i can much more then just that i need advice for my diddy.