Visually the style if very nice, which is saying alot because I don't like green.
The logo looks good and compliments the style nicely. There are certain areas which I think you can enhance. The text on the logo doesn't feel right, and the bevel (for me) doesn't compliment the logo. Go with a generic (old age font) which will keep the text clean and possibly introduce vibrant/rich colours (rich yellow). The map and sword to the left of the logo looks nice, it would look so much better if you didn't apply the hue and sat upon it. Keep the map with it's original colours intact (same with the sword) the additional colours will only visually enhance your site more.
The style looks nice, and being green there is no two colours that clash with each other than green and "vbulletin stock blue". I'd advise you change the
navbits_start.gif icon for something custom and at the same time something consistent with the theme.
The last post icon looks out of place, it just doesn't flow, maybe change these for tiny orbs and a variation of... purple? that will match the rest of the style.
The button sets don't feel right with this theme. Try and go with something that will break out the green, wooden brown buttons? possibly with icons that fit in to the theme of your site.
Overall, I like the style and I really think it's worth making the adjustments and implementing those suggestions I gave. Nice work so far though.