"When my opponent gets to aggressive and leaves himself open, I get in close and attack in short and aggressive bursts."

How are you supposed to time this... You have to have anticipated the right angle upfront. You can just move in after an attack, since the attack is ended to fast to actually move your whole body towards the enemy, he must have made a positional mistake on top.

This might work in "tekkens cooldown time"...

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Karate "punches" are more used as "stopping" movements, they are not economic enough for a front moving attack, for that you need to learn western boxing (and even change those attacks like David Haye and Andy Ruiz).

Maybe look into concepts like "connecting" and look at positions and their benefits and faults, so you might conclude to proper foot work.

You have to study the effects of a technique to know if you can properly "burst" into an attack... If you utilize strikes that do not rock the opponent enough he will pay back with a counter.