Your advanced skills are good (i.e. wavedashing, l-canceling and shuffling), probably superior to my own; but I felt you over-relied on them. In a peach matchup, the goal is to spam and outmanoeuvre your opponent; it look like young link got ahold of his older counterpart's iron boots. Also a lot of missed attack told me that either your timing was slightly off it happens to me if I haven't played in a long while), or you just haven't been playing as Y. Link for a very long time (your friend's peach seemed rather oblivious to him too so you got away with a lot of it). Essentially: jump more, spam more and don't use f-smash unless you're positive you'll make contact with the second blow. Apart from that, very good.
And also, though a complete and overly risky fluke, that up-b was awesome.