#3
I'm not a fan of this song at all, but you did a pretty good job. You also played it standing up, I probably wouldn't be able to pull off half of the covers I've done while standing, so that's a good thing.
I just get the feeling that your guitar is a bit out of tune, but that might be the camera. Also, I think maybe adding some vibrato to the lead parts would be nice.
#4
Good job man, I only heard like one minor mistake, and it was only a timing issue, but other than that, it sounded great! And like tharantyr said, your guitar tuning seems a bit flat, its only really noticeable on the high pitched riffs though. Sorry it took me so long to comment!