Comments
I don\'t know if you asked for comments in the description of your minis, but that\'s one way to encourage people to leave comments. Other than that there isn\'t a whole lot you can do. Keep in mind that there\'s nearly 15,000 minis on this site, and the ones that are yours are a very small fraction of that 15,000. It\'s going to take a while for the folks that comment to run across your stuff.
Of course some people leave direct links and ask for comments, and people are often willing to oblige. Same for the shoutbox, if there\'s a ton of people on, you might use the shoutbox and say hey, take a look at mini XXXX and tell me what you think I could do to improve etc etc. Of course some people think this is a blatant cry for votes, but if critique is what you want, sometimes you have to ask for it, since its hard to get it just by sitting back and waiting

The squeeky wheel is always the one that gets oiled and all that...
--Katie G.
P.S. I took a look at your minis you have posted, and here\'s what I think:
You really need to work on shading and highlighting, what I can see of it is rather subtle, and it doesn\'t stick out well at this scale. Additionally, you need to shade your metallics. I use ink washes for this, brownish ones for gold, black/blue ones for silver. Right now your metallics are kind of flat, remember to treat them just like anything else, they need to be shaded and highlighted too!