Hi Soul96, welcome to PJ!
Things are said, try to use just few colors and avoid gradients like you used for the shadow ;)
It looks good but there are way too many colours used in this.
Try using fewer colours next time :)
They are nice, but with 112 colors there is no way this can be considered or have been concieved as pixelart. Esp, since as it can be made to look the same with 16 colors.
I made a new ver. with lower Colors. I made this for the RPG Maker XP and the Color can be 32-Bit, so a make the Shadow with more Colours than need^^