I think the blade portion of the knife has come a long ways.
Good job. Now, I think you should focus your attention more to the hilt.
Right now it feels like it's leaking up into the blade. Most hilts are very straight, hard, and defined--except butter knifes maybe
--and yours is very bubbly and meh. Render and define the hilt more.
Also, I wanna comment on the handle. It seems too short, for one...maybe extend it out a bit? And secondly, it seems like its made from the same material as the rest of the knife. You've done admirably well using colors to show lights and darks. Now maybe try using color to not only show lights and darks, but substance as well.
Good luck, and welcome to Pixelation!