Outstanding. Overall look is clean and vivid. My guess is that the depth created by the shadow effect on the letters and bats may be harder to discern with a reduced size. The only other thought is you may, and it's a personal choice, consider using a warp effect on the JRT, reducing its left and right ends, blowing up slightly the R and the adjacent edges of the J and T and providing some small illusion that your JRT hints at wrapping around the world. But great work. It appears you'll be fine on your own, and soon there'll be folks asking YOU to design one for them!
