its a little better. i think the grass along bottom could be much better. and the 3 leaves image with circle looks pretty washed out and dull. you can probably find some stock images to use here http://us.fotolia.com/
i always find some good stuff to use there, and they are reasonably priced.
It seems like your on the right track for a basic site. I'd have something like a button or graphic that stands out that will direct potential clients to an estimate form.. "click here for free estimate!" or something.. I use http://www.emailmeform.com
they have free plans, its easy to use and set up and its been very reliable for me as i get 85% of my leads from the estimate form on my website.