First off, WOW SEVEN ENTRIES! You guys make me so happy! Seriously, so glad to see so many people expressing themselves through their art. And now to crush six of those people's dreams through harsh criticism.
Ryoga
Love this so much. Everything is awesome. From Link's change of clothing, to the fact that he's holding a skateboard. You really brought Link into the 21st century. I have a small Personal complaint. That small "Link" that you have at the bottom, I think that would've been more effective if it said "Navi". Since you have a little mean looking Navi anyway, it would've helped emphasize her role more to see that there.
Artistic-wise, you also did a fantastic job. I see some minor problems with feet positioning, but over-all your anatomy is great. Your shading is not complicated, but it works so well with how you've done this. Fantastic job, and all on line paper too!
kotake&koume
Was close to doing an idea like this myself, glad I didn't or this would be less original. Your concept is great and meets the theme very well.
Artistic-wise, Link looks great. His car also looks incredibly rupee. However, Zelda and Ganondorf's disproportionate bodies are very noticeable. Link's left arm is also a smidgen scrawny.
Majora's Cat
This made me smile. Memes are always a fun thing to see. Great concept. The meme you've chosen correlates with today's time so much.
Artistc-wise, I really don't have any complaints. Link's body is a little funky in some places, but that works with this picture. He's even got a derp-like expression.
mandym287
Truths! Awesome concept. I love all the icons in the background. Choosing the Iphone was a great choice as it really represents today's day and age. However, my thoughts twitch a little, that you have WW Link getting messages from Navi.
Artistic-wise, it could use a little improvement but its not that bad. In fact, its really good. No complaints about your shading style as it always intrigues me. Do you use the cloud technqiue?
Raindrop14
A little bland in the concept. The joke is a bit too obvious as well. Artistic-wise, Link looks okay though he could use a touch up here and there. Still, nothing major. His counter-part, however, appears to be on the verge of falling.
Random Person
:facepalm:
Terminus
This is a great concept and very easy to picture. Artistic-wise, not too bad but you may want to try to incorporate shading.
All in all, I must give my vote to Ryoga. Highly impressive.