I saw someone critique this that wasn't too nice so I'm just going to do a quick critique.
Vision- It's not too bad but I don't have too too much to say about it. The only thing is that everything is quite flat ;;v; I can kind of see where you were going with it.
Originality- Overall for originality its not actually that bad, to maybe spice it up a little you could add some things to the background to make it more realistic. Another tip is to give it some depth like i said before.
Technique- from my point of view it looks like it was done in paint. While paint isn't a bad program I've seen many great works done in paint, you could maybe try a free art program that maybe a little simpler like fire alpaca, which is completely free. Another thing for technique is you may want to add detail to the head and maybe study some anatomy of whatever animal/thing you are drawing. It may help a lot more and make it look more realistic. If you add joints to the legs and a muzzle with a stop to it it would improve by 100%. Also do not forget that the tail is actually an EXTENSION of the spinal cord, so it has to be attached and probably wouldn't bend in such a way for the grey character.
Impact- I actually think you did a good job with the impact of this piece. You can clearly see that one is feeling threatened and one is doing the threatening. You used good facial expressions that made sense to what it seems like you were trying to portray.
Overall- I think you have done a pretty good job. But I can see that you have room for improvement and I bet you could get there with a little more practise. c: