For a first attempt my compliments to you for the printing.
Be aware that i am seeing this picture on a monitor, maybe the calibration could be somewhat different but i find the grass to dark. Green grass isn't that dark.
What could be the cause of this is that you underexpose the scene.
maybe a half or 1 grade harder could help the pic to become more crisp. but be carefull with the white part inside.
The front is unsharp and could have been sharp in my opinion. It has no added value to make it unsharp.
Your lens is not capable of using a larger F, or you took it out of your hand without a tripod.
I would have left off the bottom left part thingie. It does not add a value to you pic.