You appear to have picked colors faithfully (maybe too many, but they aren't confused or incoherent), but you ruin them with a bad use of outlines, particularly
- around the "hands" (at the very least, they should be blue, not purple)
- at the bottom of the robe (it's ragged, like the "hands")
- around the head (the "face" has the only outline-worthy proper border in the whole object, while the exterior should be identical to the cloth surface)
Then you have bad shading, some original (like the round pillow shading in the front of the robe) and some faithful to serious errors in the reference (nonsensical symmetry, light on both sides of the head).
Bad shapes are also partly reproduced from the reference (no neck, short robe, short sleeves) and partly new in the pixel version (the out of character broad, robust shoulders and the front of the robe)