Cool. I really like the style. I have just a couple concerns:
1. The leaves have some pixelation, which probably came from scaling it up (pixelation.png). I've attached a PNG (leaves.png) with leaves I drew real quick that you could use (flat, contoured and contoured with noise). You'll need to tweak it as you have the other elements to make it blend in with your style better.
2. There are a couple black smudges around the stars which you can see better against a light background (black_smudges.png).
3. This is a personal taste thing, but I wonder if you have maybe gone overboard with the etchings on the globe -- particularly on the ocean.
4. If you could submit the final images in a power of 2 size, in this case 512x512. Any images not at a power of 2 size will be automatically resized in-game and this can produce artifacts, so it's best to always work in 32, 64, 128, 256, 512, 1024, etc.
Also, please submit the source file for whatever program you use (the one with everything on its own layer) so that we can easily make adjustments in the future if we need to add ranks or change anything.
Thanks!