very nice...looks like the beggining for a good adventure

Thanks for comments) 

Very good! The stone ground doesn't look as realistic as the rest, but I like the details very much.

 What's very cool in this piece is that nowhere you seem constrained by the medium, it looks easy for you to draw what you wanted.

 I definitely think you could drop that color count by a lot, but the actual scene you made is rather cool. Nice!

 I think of Indiana Jones "And the last crusade". 

38 colors... it's a small defect but I like it :)

Good stuff!

 Wow, that wall looks fantastic!