I've only watched the first minute or so of towtox's video (sorry, I'm procrastinating right now, I should be studying, exams in two weeks), but some basic comments...
Towtox, you don't seem to feel comfortable with a deck of cards in your hand, and you certainly don't look comfortable. You rumble a lot, and display an almost obsessive penchant for squaring up a squared deck. Also, your double lift needs a lot of work. Your get-ready is too slow and clumsy, and you should learn a different turnover (turn it over using one hand). The good news is that all of this will come in time, and I certainly understand that you're quite new to magic, so that's alright. But definitely, right now, the technical stuff is what you should work on.
EDIT: To be fair, I decided to watch the first minute of YRA's video as well. So some more basic comments...
YRA, you seem to be a little more advanced than towtox with your technical capabilities, which is good, but your presentation is in need of improvement. In general, I feel like you have not rehearsed the effect enough - the sleights are fine, and you've practiced those, but not the effect. Your patter can't really be called patter at all, since, a minute in, I had no idea what the effect was. There's something to be said in support of surprise in magic, but not this kind. Also, you umm'd and ahh'd a lot, which is a general sign you don't really know what you're doing. Basically, the sense I got from that video was that you have your sleights down fine, but you're just doing tricks. You're not standing out as a magician - there was nothing to tell me anything about you except that you come across like every other person on YouTube I've ever seen - and I think your next step is to work on your persona and presentation - turning your level of technical ability into the experience of magic, and developing your tricks into magic.
EDIT 2: I apologise if this comes across as harsh. These are my genuine opinions, though - I have no motivation to criticise for the sake of criticism. towtox - having said that last line about working on your technical ability, I believe that too many young magicians are brought up to learn tricks, and not enough about presentation, so it's probably worthwhile to read my comments on YRA's video as well after you watch that.