Ha! I ran into that issue too, I need X amount of posts before I can put a track up for feedback....either way, I started doing rock, singer/songwriter and metal before I even got in to hip hop, which is quite a bit different, especially if you are engineering the session as well because you don't have the luxury of having every kick, or snare hit, or hat to be in that perfect freq range right off the bat.
Another great site I visit often when it comes to rock music is gearslutz.com, they have a whole bunch of knowledge, just like this site, but it's mainly geared towards live music. Post or email me what you got and I would be sure to critique as nessecary, the one thing I've learned to look out for right of the bat is the low-mid feq range...alot of newbie's who record/mix rock saturate the hell out of that area.