Nice concept, needs some tweaks though...
Being that it's your first game, it's pretty good, the whole "Toy Land" theme is a nice twist on the traditional TD game, and adding a hero is nice as well.
I do have to admit though, the interface felt a bit clunky... Game just would not scroll when I reached the edge of the screen, and clicking on the mini map seemed a bit sluggish. It could have also used some keyboard shortcuts as well, so I could switch to my hero and off without having to search around for him. Maybe another shortcut that would let me bounce around the towers as well.
Still, again, it's great for the first effort, and hope if you do a sequel, you'll build upon and improve the concept!