Actually, that wall of text was all quite helpful. I will definitely use your tutorial as well as balduran's. I'm relatively new to pixel art, so, I just gotta keep practicing. I agree with the yellow thing. When you go too dark it looks like diarrhea. Anyways, thanks!Hey wassup
If you want to make the blade look silvery, definitely go for the blue tinting. Adding yellow would make it look like gold, which could look good too (But be careful because yellow is a tricky shade to work with). You can also change the outline a bit, to give some more details to the blade. Also be careful when you change the thickness of the blade (The part where the blade suddenly becomes thinner looks weird); Try using more shades and colors (right now the whole sword is only grey, make the hilt or the handle be some other color) And try to have a stronger shading, and use it on your favor to add more details to the sprite.
Other than that, just do some tweaking here and there and it'll look pretty good.
Here, I took the sprite and edited it:
The sword might look completely different now, but all I did was change the shading/colors and mess around with the outlines (There's also the animated glow but that doesn't matter). That's because the whole shading part is the hardest when making pixelart, and it's the most important thing to have your sprites looking good. There's this tutorial about shading and choosing colors that I made, which might be pretty helpful for ya.
Sorry for the wall of text