It was a tough shot. Just remember it happens and makes you sick and keeps you awake at night. Some here act like they never had a bad shot. Well if ya aint shootin ya aint killin. Just remember aim for the far armpit, keep your blades razor sharp practice with them on 3 d targets at all angles from your saddle. The higher you go up the more angle you have causing a smaller vital sweet spot. As far as getting down on the blood trail just relax for a half hour minimum unless you hear it go down dead. Just listen and wait look for land marks keep using your call then imprint it in your mind the shot angle the escape route and the wind direction. Have a hank of toilet paper handy to mark last bloods, call your buddy if you need to track a blood trail you can learn a bunch from buddies. finally when tracking do not rush look around find the arrow first inspect the arrow for fat, guts, color of hair, blood and smell the arrow it should tell the story. It will die so dont give up on it right away for sake of scaring deer out of the area they will be back the does come back right away, the bucks will follow. while tracking look to last blood look at the gate of the tracks this is where a tracking stick can be used keep positive look to water, streams, swamps, rivers , lakes, ponds and heavy cover because that is where they will go. sorry it happened but it happens.