Okay, so i am going to go through a random video on OP's channel.
I am gonna be completely honest so - just so you know.
Random pick was:
Lets Play Mark Of The Ninja Ep 1. Im The Freakin Ninja!!![/size]
First impression: My headphones exploded from the volume. This thing discouraged me as hell. If i were a normal viewer, i'd be closing this quite quickly. And your microphone sound is quite low - but still good quality. I realized that you bothered to render it to 108op, but didnt bother cutting out the beginning and make a proper introduction. You are not supposed to a volume check while recording and include it in the actual video. The only thing im digging so far is your sexy accent.The time an average viewer views your video are about 15 seconds (excluding any intro depending on its lengh) - you have to be able to catch the viewers attention fast. It took you about 1:10 to start the game. At this point, the sound is still too loud.
I watched to around 2:50 - this video is 21 minutes long.
I hope this post helped you a bit mate.