One thing I've found that works well for blood is to dust it with dirt. Dry dirt or sand is best. It may take a few applications and wipings but you can cover a heap of mess and pretty well make it invisible by doing this. (Because very often we don't have access to loads of clean water for washing things in the field.)
I go overboard with posing, positioning & taking trophy photos. I take 50-100 trophy photos from various angles etc. to end up with a couple that turn out the best. Trying to see how they look on the camera screen in bright light can be tough, so when in doubt I take more!
Another tip is to get the camera as close to the ground as possible. For some reason pics look way better with some sky in the background. This will mean cutting/pulling grass, weeds, etc. in front of your trophy to be sure those don't show up in the foreground.
Best of luck to all this fall season!