Thanks Varock and the others. :) I'll see if I can fix some things up, depending if the person wants them changed though. :S Thanks for the feedback, I really do appreciate it a lot. :) If the person doesn't want anything changed, then I may just do it anyways for my benefit, lol. :D

I think that you did nicely overall. I just pretty much agree with Varock.

Also, try adding some texture to the sand,and waves to the water.

It looks good but also a bit flat as the sand pretty much stays the same tone all the way to the horizon.

The sky is the wrong way around... the closer to the horizon, the brighter it is (although the clouds on the ref hide that a bit)... I would also take a light source, cause i miss that a bit... And you dont have to add texture on anything. You can make the bushes in the background plain dark green, or a more abstract and simple texture (not dots, but larger surfaces to create texture). (Same for the sand and the water)...

Pixeling landscapes is very difficult. So I think you still did a fair job (im no good at it either ) so keep it up ^^