Maybe you've already done this...but if you are diligent about searching the Internet, you can find some sites that mention specific colors that will put you in one category over the other. For instance, I am a deep autumn, but it took me a while to be sure that I wasn't some kind of winter. The deal breaker for me is that I don't look good in icy pink, which is an important winter color. So I would recommend tracking down some sites that specify the differences between the seasons you think you might be. Then you can try those colors and get a better idea of which category suits you better.
Some of us find too that we don't fit nicely into one season, even in the 12-season system. I know that there are some colors in my palette that don't look great on me, or that I have to be really careful with to get just the right shade. So I look at the seasonal color analysis as kind of a jumping-off board, which might need tweaks as you try things out over time.
