Congratulations on your new Canon 60D. Unfortunately, your pictures are poorly composed. For starters in all but the last picture, your subject is dead center, not the best nor most pleasing way to view a picture. Without going picture by picture, I'll just CC picture #1.
Subject dead center
Subject way too small needs a major crop
The shadow in the lower left corner is distracting. Remove in Crop.
Not sure that a single leaf with a ant is a really interesting subject they way you're presenting it.