Kata shouldn't be too fast, It must last somehow a determined time, but as someone already said, Technique is fundamental, add to it power, and you should have a great kata, don't rush in your moves, do the combinations fast, but don't rush. Please refer to the introduction of M. Nakayama, Superior Karate books, he sais there are 6 important things in kata: Order Start and End Meaning of the movements Objective of the movements Rithm and coordination Breathing (I'm translating from a spanish version of the book , you may find them with different names...) Any way you may try to find videos, and compare...