My complements, not bad for your first two I will say. But they do have common problems that could easily be avoided next time. I would suggest looking over
This before you make your next AMV. In particular look for ways to maintain the quality of your footage as well as, how to deinterlace your footage. That'll stop people from turning a blind eye to your work.
Besides all that though, I enjoyed the editing of "Darkness Within". For someones first AMV your not one to use the "Footage + Audio, must = AWESOME" method of editing, and actually used timing and effects.
I won't comment too much on "Untouchable" though, mainly because I can't think of anything to say about it. Made me chuckle though.
Hope you do well, welcome to the .Org