It really doesn't matter what position the seed is in when you plant it. I just planted my next crop and didn't pay attention to it at all-you won't notice a difference. As for tweezers, that's a bit excessive. Cleanliness is important when germinating, but a good hand washing before touching your seeds is all you need. I always soak my seeds for 12 hours in a diluted hydrogen peroxide solution just to give them a clean start. Just plant them direct to media, skip any paper towel or other "Pre-germ" methods, keep warm (80 deg is perfect) under a mild light, and your seeds will sprout within 24-48 hours. Rarely they will take longer than that, if the seeds are older or have an especially thick coat or if the temps are cooler than ideal.
