Day Two...An Assignment

I found a photography course on-line...and free at http://www.morguefile.com/forum/index.php?c=6. Assignment one was to take an abstract picture using what we learned about composition and lines. It was supposed to be unrecognizable, however I can't seem to figure out the zoom well enough to make these that close. I have three favorites -- please pass on any advice you might have on how I can improve. Thanks!