Good for you!
I keep saved
seeds in paper envelopes labeled with the
seed identification, when it was collected, and sometimes a memo about planting conditions, if I think I might forget. Avoid keeping them in plastic, which can retain moisture and cause mould.
seeds seem to do better for me when I keep them in a dry, but unheated location over the winter, like a mud porch. Some
seeds take their cues about when to germinate from changes in the temperature, especially the wildflower
seeds. (You may have heard of people "pre-chilling"
seeds to give them the sensation of winter passing. I just let nature do that for me.)