Thank you all! That's all great advice Nicole. However, sometimes I struggle with thinking of different tags that are still truthful, and seem like keywords people would actually search for.
Summer- I think the secret (for me) has been increasing the brightness of a photo by a LOT. For every picture I take, I increase the brightness until the whites in my picture look white. Otherwise, it seems like a sort of grey cloud is over everything. And, I try to photograph on overcast days- that seems to help colors look true to life.