Ok, let's see if I can help you out.
At 00:23 you used a meter to do EX Slide. I don't really know why. You put yourself into the corner situation when you had total control and advantade. Plus you could have punished that arrow with the normal Slide anyways... Then you crossover jump with JiP, b12, ice ball. Don't know why the Ice Ball if Slayer was blocking since beginning. b12 is really easy to hit confirm into Ice Ball on hit and Ice Klone on block. Even without Option Select.
Another tip for you is to master the f41 after hitting EX Ice Bomb (smash). It's so good to get out of corner pressure. EX Ice Bomb has armor and followed by run~f41~grab puts your opponent into the corner instead. If you're using EX Ice Bomb in midscreen you can just finish the f41 string with Slide for more damage instead of just doing a Slide.
In the first round of 2nd match you used 2 bars of meter to get out of pressure. The problem it was you were like 20-25% of life left and Slayer was like 90-95%. I would definitely saved those meter for the round 2, since only a TRUE MASTER would have made that comeback.
The rest of the tips I could give you are shit that you are going to learn with time. Just don't play so aggressively against Kung Jin. You have to be flawless and play really, really patiently in this particular match up. Let him come to you and not the other way around. Try to bait him to come to you and then pop Ice Klone. Don't hide all the time behind it. And obviously, I think you noticed by that match, respect Kung Jin more when you get him down and he has meter. His wakeup attacks using meter are devastating and lead to 35%+ combos.
Down here you can see Tom Brady vs Slayer. You can learn a lot more just from watching these matches than everything I've just said lol