DD is almost right on the money!
Just get rid of all that Cotton and Bingo!
Make sure NOTHING is tight.
Make sure NOTHING is cotton
Try three layers, one super light one on the skin, then a heavier insulating layer, say poly pro's or some kind of good warm liner, then a good warm shell with some kind of windblocking capablility. Wool is nice, but the wind will eat you alive unless its good wool! Unfortunatly from what I hear, the stuff I like is getting almost impossible to get anymore.
If you are stand hunting, change when you get in or very very near your stand. Go in light (just enough to stay COMFORTABLY COOL try that for 18 days LMAO) then change into your SUPER warm gear usually at he base of your tree is best.
If you get cold, change. Ie feet, change your socks. Hands, gloves. But dont forget to look at your head!
A good stocking is number 1. Dont feel silly but a scarf is #2. Pits is #3 Something along your lower back is #4, and last but not least, your inner groin area is #5. Keep good warm objects here. Some guys like hand warmers..atleast think about it next time, espically when you start getting cool. Look at how you have dressed and where you are concentrating your "warm" features.
Again, GET RID OF COTTON! It does NOTHING to keep you warm, it does NOTHING to shed the wind, and it WILL keep you wet! You NEED to whisk away moisture atleast at the first and 2nd layers.
Last but not least, learn to be COMFORTABLY COOL! Its tough to do, its tough to pull off, but when you do, life in the woods is much simpler! ALways carry extra HEAVY gear on warm hunts, you dont want to get TOO cool. But you also dont want to be so warm you are sweating! Bring some snacks....high energy stuff. Gorp, Power Bars, Power Gel. Eat well and get a good nites sleep before you go out and you'll be where you need to be to hunt effectivly in the "COLD" <img src=icon_smile_wink.gif border=0 align=middle>!