Wow man you're not bad at all.
The headshot one is pretty good, but you need to speed your movements up a little bit. Slow spacing can look really good but try not to overdo it. Also your foot placement could use some work, when he gets shot his feet shake around a bit when he falls. You did a pretty good job on the reaction, and you're very decent at animating blood.
Keep up the quality of this one and you'll be intermediate very soon. Just try not to get lazy, keep your movements looking natural, and you got it. Good luck.
Edit- Have you had an account here previously?