Im not an IC player, but I can safely say you used that dash attack too much.
Now, its not like you used it excessively, but i personally think it was too much (and fofo apparently thought that too since he could predict it).
Another thing about the dash attack is that, to me atleast, it looked blaringly obvious when you were going to do it. I'm not saying the whole "Oh i think you suck i can beat you" kinda thing, im honestly saying it looked like if you took 3 or more steps WITHOUT jumping (in which you'd normally do a ice block or n.air, good choices i think), you would normally follow through with a straight dash attack.
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A few times you faked it, which is a good thing, but I personally dont think the dash attack is worth putting out there THAT much (again, i'm NOT an IC player, so dont take what im saying to heart).
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On a positive note, the desynchs you had were pretty applicable. It'd be nice to work in a roll-blizzard desynch, but i dont think i saw a time whe you really needed it.
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THe one thing i can say with certainty though, is you cant convince me you know how to deal with a samus. And im not talkin IC vs Samus, im talkin in general. For the love of god, DODGE THE SECOND MISSLE IF THE SHOOTS IT ON THE GROUND. lol.
You stood there and blocked 2x missles three times (i think, maybe just twice). It's not like blocking is a horribly horribly wrong answer, but it's really unsafe (especially when you're shield gets small, like so).
The ICs have a pretty standard sidestep, and as long as the attacks are blatent 1shots like missles, i personally wouldnt think twice about using it. However, I do understand being hesitant at the cost of getting Nana hit in the face.
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All in all, i say you need to work on your offense. More specifically, your different options and tools for offense. Work on some more approaches (i say more instead of better cause again, I can claim to know everything behind the dash attack, but there's more to life than that).
P.P. (Post post - just thoughta somethin else before i hit reply)
When you grab, you did minimum damage. Im not saying you should have started wobbling or anything, i know some people are real touchy about the subject. but most of the time you just completely waited till Nana got to you to do ANYTHING.
As far as I know, the only time you would want to wait is if you WERE planning to wobble (which, from what i saw, you didnt make an attempt at).
I think that maybe you shoulda did SOMETHING to tack on some damage before you threw/smashed samus away.
**But on a positive note with the grabs, i did like your attempt at the blizzard chain-grab-combo thingy. (Cant remember exactly what you were going for, but if you're asing for help, you gotta know what's good and what's not)
You hit 0% of the combos you dont try for, so i'll give you credit for atleast trying it there.