Hi Raven I remember seeing your first pic but I didn't have an account to post with then. I saw you wearing a band tee and black(?), maybe dark grey(?) jeans. And to me it did seem like that was an outfit a guy or a girl could wear. It's really easy to make those outfits strictly guy though. First off for jeans/pants somethings like these should help:
Kohls- Levi's® 514™ Premium Slim Straight-Leg Jeans (In Alloy wash)
Kohls- Helix™ Straight-Leg Denim Jeans
Hot Topic- SOCIAL COLLISION BLACK INDIE FIT JEANS
Kohls- Enyce® High Road Slim-Fit Straight-Leg Jeans
For T-->-bleeped-<-s, band shirts are GREAT! They really are because it is more of a guy thing to wear them. So keep up with that, but to make yourself look more male you should layer a plaid shirt over it. That's a very guy look and it will help you have a more masculine frame. I would suggest something that has a masculine print, but that is more on the "trendy" masculine side rather then the just masculine side. My feelings on that is, sometimes if someone dresses too masculine with out binding or packing they run the risk of coming off as lesbian rather then male. Now more and more men gay and straight are trying to dress trendy and cool. Also a button down shirt with two pockets is better at hiding things, when not binding, then if they don't have them. So anyway some ideas:
Hot Topic- IRON FIST RED BLUE BLACK PLAID LONG-SLEEVED WOVEN
Hot Topic- ORANGE BLACK WHITE PLAID FLANNEL WOVEN (Which I really like and think I will buy for myself)
Hot Topic- SOCIAL COLLISION PURPLE AND BLACK PLAID WOVEN
Hot Topic- SOCIAL COLLISION GREY BLACK AND BLUE PLAID WOVEN
Hot Topic- BLACK AND WHITE PLAID LONG-SLEEVED WOVEN
Kohls- Helix™ Plaid Flannel Western Shirt
Kohls- Tony Hawk® Shenanigans Plaid Western Shirt
And then for shoes I would go with a skate type shoe for instance:
Zappos- NIKE 6.0 MAVRK MID 2 (Black/White-Sport Red)
Anyway hope I helped. Sorry if I gave you too many things. I'm gay and really into fashion lol.

P.S. I know you said you liked K Mart clothes so I was going to use some clothes from there but the K Mart site was REALLY slow for me today so that's why there's no clothes from K Mart incase you're wondering.