Looks like you did a good job with the bird! Enjoy the meat. There's always a first.
As for the killing not going so well, did you feel bad for it's longer than ideal death because of the after death flopping? If so, it's normal for a bird that has died to flop around like it is "alive." I've bled out birds and cut heads off all the way. When bleeding out, they don't move till they are almost out of blood and "dead", while if I cut the head all the way off, as soon as their neck is severed, they start to flop. I prefer the whole head off with knife at once method because it seems faster for them.
As for the killing not going so well, did you feel bad for it's longer than ideal death because of the after death flopping? If so, it's normal for a bird that has died to flop around like it is "alive." I've bled out birds and cut heads off all the way. When bleeding out, they don't move till they are almost out of blood and "dead", while if I cut the head all the way off, as soon as their neck is severed, they start to flop. I prefer the whole head off with knife at once method because it seems faster for them.