Your audio quality is awful. I can hardly understand what anyone is saying, and you should be using a compressor to boost your vocal audio up. Also, I'm almost certain you're recording the game audio through your microphone which is drowning everyone else out. (Which is really bad. DON'T DO THAT)
Your video quality looks kinda bad too, though it might be youtube's encoding that messed it up, but I'll ask anyway: What's your encoding setup?
I can hardly hear your commentary, but what I can hear, and this is coming from Metroid: Zero Mission Part 1, I think it's pretty boring. So boring in fact, that one of you resorted to singing random in-game themes while the other guy would only commented if he was answering a question or he would spin the commentary onto a pointless tangent. (Most of your audio involves controller noises.)
If you want to get better at this I suggest you watch other Let's plays (good and bad ones) and get an idea of what your audience wants to see and hear instead of just jumping in without a clue.
Also if you need help with finding good LPers to watch and learn from I recommend these guys:
ChipCheezum
chiliconcomrades
As for bad LPs to watch, you can find them everywhere on youtube. Seriously, just search "Let's play" <game name>.
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Oh and FYI, I hope you're not here to link dump your stuff and leave. We keep getting those kinds of people here, and I'm getting tired of giving feedback and the link dumpers never join this growing community. (That means posting more often.) After all, this is first and foremost a gaming community not a pool of new subscribers for your let's plays.
