Your icons looks hardly shaded at all.
I can't really tell where the light source is on this one.
You also used a lot of solid black on your icons.
A basic rule of graphics is to never use pure colors such as #00000 (Black), #FFFFFF (White), #FF0000 (Red), etc.
Super highly saturated colors are also usually a no-no.
For the computer, perhaps just make it a dark grey instead of black.
On this sword, it doesn't seem like your normal style and barely looks colored. All the colors look like a dull grey.
This would be a time where you would use a pretty saturated blue for the marking on the sword.
Also, it needs shading.
I'm not gonna comment much on the editted VX icons, since they're just edits... XD
The main thing you gotta work on is shading your icons and keeping a consistent style.
I'll show you some of mine and my shading style.
My style is also different from RTP, but it's smooth xD
(Please don't use these... >.<)
(Sorry... this is a kinda bad critique =/)