Best Seed harvest and storing advice

How's my favorite gang huh?
I'm breeding and have a question. Is there some sign I should be looking for when determining when a seed is ready to pick? It seems to me like the best seeds come from pods that have a little brown on them, like at the tip of the pod. But that's not always the case. I found a few tiny seeds that way too and have found some huge brown mottled colored seeds in big green pods. Seems like feeling them for size and just getting a feel for their size is my best indicator but I can't help thinking I'm doing something wrong. I'd hate to have to wait for the seeds to fall off onto the brown ground.
My other question is what is the best way to store seeds. Right now I got them in the fridge in a plastic container with holes in the lids to let moisture escape. I'm going to the store tonight to get some uncooked rice to put at the bottom for moisture control too. Is there a best way with just a fridge and household items to use?
Thank you so much for any help you can give. It's much appreciated!

I agree that feeling and pulling out random test samples is the best way to find out when most of your seeds are ready to harvest. If they are big, brown and mottled, they are viable seeds. When they are basically all at this stage I'll harvest branches. I usually dry them in the pods with the plant until it's easy to crumble them right out of the weed, and smoke it as I pick seeds! I'll usually dry the seeds out for another week or so after this, then put them in an air-tight, lightproof container in the fridge. I keep them in little zip-loc baggies inside of a lightproof box in the crisper. Just popped some beans that were a couple of years old, still good.

Watch it with the bed of rice and holes in the container. The rice could just absorb moisture from everything else and transfer it to your seeds instead of the other way around.