/me scratches his head.
Dont take what I have to say to heart, cause im not an avid kirby player, but I personally think you made alot of odd decisions.
I wont go as far as to say bad decisions, cause it's not as if they wouldnt work, but it seemed like you would make odd moves.
For example, there were a few times where you would downthrow marth (obviously).
Normally, you could tech chase him if he hits the ground. If he didnt tech, you could uptilt him. If you wanted to knock him away from you, you could forward tilt. But one time you went with a SH bair, and the other (that i can think of) you went with a f.smash.
Now, i wont say either one of them was wrong, or was specifically a bad choice, just rather... odd. Seems that you would more-often-than-not miss the attack.
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The second thing I thought you did alot was used alot of f.smash. To go another step, I think you actually used the f.smash to tech chase a few times. And to go even further, i dont think you d.smashed the whole match. Not to say that f.smash doesnt work, but i personally believe that d.smash would have been better, because it's generally safer (i think).
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I will say the one thing I didnt like was you stayed in marth's "danger range" alot while doing nothing. That's not a kirby specific problem; that's just dangerous in general.
My suggestion would be to either stay close to him and start hitting him, or stay the hell away from him. (Pretty obvious. :/ )
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The last thing i was going to critique I have is the stone-to-ledge.... that you missed everytime (i think you missed everytime). If you're going to do it, you gotta hit the ledge or you normally get punished. And if you're gunna miss low, you can atleast try to sweetspot the ledge afterwards (which caused you to get tipped, i think).
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With all that said, I actually do have something to compliment you on. You generally did a good job coming back to the edge and not getting *****. The first stock? Eh that happens from time to time, i just wrote that off as a mental slip.
But you did a good job tricking marth into a bad position (i.e., his second stock).
You also had a few tricks to protect yourself (the f.hammer). Good ideas.
If i had to make a suggestion, i would say to keep in mind that f.air'ing after you jump gives you a little more horizontal distance, which gives you more distance and more time to get back to the ledge. Other than that, i thought this part of your game was pretty good.
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But again, dont take everything i said to heart. I'm not a real avid kirby player, so i cant talk like im the law or anything. Im just tryin to be helpful. >.<