It doesn't look all that bad, but I have a few pointers for you to make it look better.

- Are those white things supposed to be clouds? If so, google search some real satellite photos of earth and you'll see that they're much more swirly than the ones you made. They also have a lower opacity and cover larger areas.

- Your colors seem too saturated. I suggest choosing a darker, less saturated blue and just lowering the saturation on everything else too. Make sure the blue and green look good together.

- You didn't anti alias this, and doing so will probably improve the general look of this piece. You can use a light blue to smoothen out the difference between land and deep sea, and a light blue to anti alias the clouds.

- Where is your light source? If you've decided on one, it hasn't been defined enough. You're pretty much shading in from light to dark, from outside to inside, which is what we call pillow shading. Pillow shading isn't a good way to shade, so find a real light source and keep in mind that in space, areas go from light to dark pretty quickly! (think of the difference between night and day)

I hope I helped,
ceddo.

AA? Ah, I forgot. >.> Ok. I'll rework the clouds too.

I dunno, but it really looks like the earth IS pillow shaded.



Thanks for offering your help

Better?

I haven't changed the colors yet, but I can't get the damn AA straight! *mad*

This is simply good.
You could add more lightblue spots to the clouds i would say.
That would make those clouds more alive.