First off: Wow, that's really nice.
I like the way everything blends together...it's got a really harmonic flow about it, easy on the eyes. The way you picked the colors makes it really stand out to other pieces, they're more unique. Everyone seems to think you have to always pick dark colors to be easy on the eyes, but you really showed your skills by using light colors and still making the piece very pleasing to the eyes.
I also like the text, it should just be placed differently. Maybe in the bottom right corner on the grass or something, or possibly give it a wave effect and place it on the water towards the right of the picture. Overall it's nice and smooth, and good color on the word 'Paradise', flows well with the piece's other colors.
Nice job on the atmosphere, gives the piece a nice air about it. Kind of a dreamy effect. The background looks a little hazy, but the objects in front of the background stand out sharp. It's like when something happens in your past, some of the details can be a little fuzzy but the part that has the most meaning sticks right out.
I know it must seem like I'm rambling, I just think this is a really good piece. Keep up the good work, you're very talented.