Having used Garageband for the last few years I recognise most, if not all of these samples. However, very well put together. I'm no expert (yet :) ) but a great start for your 1st track, keep up the good work. If you want my advise, you should experiment with chopping up the samples rather then dragging and dropping them into the mixer. let that creative mind show and try to bring in your own sounds.
hope the review helps...
peace.
on Klick Klack Boom by MOAB
on terminator t-2010 by kaulaz
on the nose by kabuki
hope the review helps...
peace.