I think the kitchen is overall, very nice, but might add a plant to the counter overlooking the living room, on the left side.
The dining room wall opposite the opening to the living room looks blank. I'd add a cluster of 3 nature prints there, and perhaps a tall plant on the floor in the corner, or by the back door. I'd have the prints be something with a beige or light brown background, similar to the wooden clock you have up. I think prints of native flowers might be appropriate.
I'd also add a large piece of art on the living room wall to the left of the TV. I think the art you have in the kitchen is finger painting? I LOVE the colors, and think the yellow of the living room calls for something vibrant as well, in similar colors.
He who can no longer pause to wonder and stand rapt in awe is as good as dead; his eyes are closed. ~Albert Einstein