Well, I'm hardly t!mmy or h1roshi, but I can offer some advice.
Aerials - you know how to use fair and uair very well. I was impressed by your (almost) wall of pain using your fair - that's very hard to do! However, when edge guarding, your best bet is dair or bair. Dair will spike if you hit them with the tip. Bair comes out quickly and is powerful. Since Kirby can turn around in midair with every jump, you'll have to practice floating towards the opponent while facing away from them, so you can do your bair. So if you're off the left side of the stage, jump while facing right, then hold left, then let go of left and jump again, and so on. It takes a bit of getting used to but it shouldn't be so hard.
Tilts- I didn't see you using your tilts much. They come out quickly. Utilt is good for juggling at low percentages, try using it then jumping and doing an aerial, probably a bair. Dtilt is very low down, and has little ending lag, so it can be used to hit through someonés shield. Better yet, it often trips people. If they trip, you have a sure hit on a forward smash.
Grabs- shield grab more! Also, if you grab when they are at 0%, you can do some sick combos with Kirby's forward throw. Search 'Kirby Code Blue' on youtube for more info about that. For instance, forward throw to midair hammer almost always connects at 0%.
Kirbycide- if you've taken much more damage than the opponent, and you have more than one stock left, suck them up when you're in midair and let yourself fall off the bottom of the stage. Right around 0:55 would have been a good time to do this. Or, if you're awesome, you can spit them out under the stage, turn around in midair, and bair them, which will cause them to bounce off the stage and fall (I can do just about everything there is with Kirby, except this).
Hammer- kirby's hammer is really powerful now, and you should use it more often as a midair option. In midair, it comes out more quickly than on the ground, and its two swings last longer. You have more mobility, and it has little lag if you land on the ground while using it. It also cancels the rest of your jump, so it can be used low down to the ground.
Approaching- you seemed to have a little trouble getting close to Rob without him hitting you. Some options are short hopping an aerial hammer, which has a lot of range, up b, which is surprisingly useful, and maybe even kirby's dash attack, once in a while. Or, you can run up to them and block, hoping to shield grab.
If you already do some of this stuff, sorry. I just went by what you did on that one video.
