Don't give up on finding the deer. Do concentric circles from the spot where you found last blood. Slowly increase the size of the circles in your search pattern. DON"T think "Well, if I was a deer, I'd go here" 'cause you aint a deer. Get some friends to help you with your search and you'll probably find the deer within an hour or two now.
For all the of those firing off your yak-yak guns at this kid, give him a break, we were all beginners once and everyone makes mistakes. Anyone who says they haven't made mistakes, is either a liar or the luckiest SOB that ever lived and needs to buy me a lottery ticket. I won't lose mine like someone else!