I just wanted to make it look really big and heavy:)

This isn't bad, but I feel like with a palette sized at five colors you could have held a little more mastery over the lighting and such. :O You did a good job of keeping your lines mostly uniform, but I feel like the thickness of the top edges warps the perspective a bit. I'd agree with what others have said about depth as well, but consistency is another thing to be looked at, I think.

I can't say much as to whether or not you *should* use dithering, as I've never been able to really satisfy myself with it, but perhaps the two shades (dark golden yellow and black) are a bit too starkly different, and it makes it look like you've sorta got a mesh draped over one face of your object.

Lastly, your brightest shade that you've used for your highlight could probably serve to be lightened further, and desaturated a bit. That would help to let it stand apart from your middle tones, and better justify the use of that additional color.

This isn't to say you didn't do well, but only to say that with some very minor tweaks, this could be *awesome*. Don't stop pixeling. :D

I wouldn't recommend dithering at that size. Also, what the others have said about height. Keep tring! 

You need to shorten the height. The more you view of the top of an object, the less you can view of it's front/sides. In this image you almost seem to have stretched the stretched the front taller as well as show the top, which is the opposite of how this perspective works.

Nice!

I would like it better with less depth, maybe a pixel or two less thick would look so.

Also, in most of the pictures, triforce looks equilateral.