still, your sprites aren't good YET. It can be improved more. I'll give you more advice for you to work on.
The sprite doesn't look with the enemy you're trying to portrait. The head is different and it doesn't look like a skeleton. Sure, the size is too small, but you could try harder. The animation is also poor: the character is too stiff and mirrors itself. It's good to avoid mirroring, because it gives that 'laziness' feel to the sprites. Don't forget that animation is also character-specific. I mean, animated skeletons wouldn't walk waving the arms to much. See how it moves and attacks in the original game, so you can reproduce it in sprite form.
The sprite doesn't look with the enemy you're trying to portrait. The head is different and it doesn't look like a skeleton. Sure, the size is too small, but you could try harder. The animation is also poor: the character is too stiff and mirrors itself. It's good to avoid mirroring, because it gives that 'laziness' feel to the sprites. Don't forget that animation is also character-specific. I mean, animated skeletons wouldn't walk waving the arms to much. See how it moves and attacks in the original game, so you can reproduce it in sprite form.