make sure your hands are clean and avoid touching the taproot....i usually use sterile tweezers.

"When is a good time to introduce light? i have three seeds that have just cracked the surface, one is about a centimeter out but the seed shell is still attached. I read somewhere that you shouldn't introduce light until there are two fan leaves? any help would be greatly appreciated!"

as soon as i see a seedling popping out of the soil, i put a cfl as close as possible with out burning the seedling