Trying to germ test my own seeds

I trying to check some of my own seeds I saved from last year to see if they even germ before I waste my time trying to plant them all. Here’s what I’m trying if you see any red flags let me know please. I took some seeds placed them on a pretty damp paper towel that I used rain water for then put them in a little snack size ziplock bag squeezed almost all air out of it and sealed top completely. I did about 10-20 seeds a bag. I did sunflowers, cosmos, fennel, blanket flowers, false blue indigo. I figured I will wait about 2 weeks leave inside and see if any have germinated I’m not trying to transplant or grow these just looking to see if there even viable. Location Zone 5b-6a USA. Main concerns I have should I have left the ziplock bag open a little at top and anything else I’m not aware of. Or will this work. Thank you