Well, first off, I love the blue. Your blending is pretty good considering what you had to work with. I cannot really think of what you could add, unless it was something small near the top. You could fade out to stars (to black) at the top by Aslan, but that's just a thought. I don't know how complicated that would be. Your overall design is well thought-out, and I like it!!

I like the color as well, I think you could add something in the upper left maybe an albatross or Reep or RD or Ramandu himself. I really like it, It looks very Narnian and the blue goes well with the whole sea adventure thing.

The NARNIA letters in blue look very nice for a change from how we usually see them.
One thing, make it obvious what Caspian is looking at, I'm assuming he's looking at Aslan, but he could be looking at the Twentieth Century Fox.
Maybe you could put an Island in the background since they visit so many.
Having everyone smiling on a movie poster is wonderful!

Not a bad looking poster for VDT LucyP0104, nice work. Hmm, in terms of adding more elements to the poster, I don't think that is entirely necessary. Some of the most simplistic things are the most effective and you don't want to add too much, causing the poster to be cluttered. I think its more of a layout thing than adding something. Everything that you have on a conceptual level works great, all the elements are there. I think a few minor tweaks in the layout would boost the effects of the poster. For example, a slight shift in the four characters. I like where they are now and the "stacking" effect to them, but what about positioning them in more of a slight curve? This would lead the eye through all four images and then into the focus of the DT image. Also, I feel like the image of Aslan (nicely blended into the skyline btw) needs to be shifted slightly to the left. It looks a little awkward having Caspian's nose almost butt up against Aslan's eye. If you indeed have to add something, I think that Follower of Aslan's idea about the starry sky would work nicely as well as Hermitess of Narnia's idea about adding an island in the BG.

On the specifics of imagery, your choices work great, especially considering the limited amount of VDT images currently available. All the character's expresions seem to match up well with their personalities in VDT (I really like how Caspian looks like he's reflecting on something and even though Edmund is in PC clothing, I didn't even notice, it just seems to fit with VDT). I don't know of all the imaging tools you have available, but it might be nice to see the image of Caspian brightened a bit just to get a bit of continuity with the lighting on the other three characters. The overall blending of imagery looks good, especially the blending of elements with the water. A minor note, on the row boat, it seems a bit large when proportionally compared with the DT.

Coloration throughout looks great. I really like the effect of having the blue water really bright in the distance and then gets really dark into the foreground as it blends with the negative space. The overall blue feel works well and I think it works nicely including this coloration in the Narnia text itself. It's clear that you defintiely have a clear mind set on where you want to go both visually and conceptually. If this is your "rough draft", I can tell that you are going to have a great final version with some tweaks. Nice work on this one and I look forward to seeing another pass on it .

I think that's brilliant!! I love the subtle image of Aslan.

You could make the ship more prominent since in the PC posters they made Caspian the main focus - well in some of the official posters.

Nice job! I like the blue logo and all the words at the bottom, makes it come alive a little more.