Hello,
From what i can read the seed had that little white tap root showing and you covered it with soil? If it is what you are saying than yes this is normal and let the nature go through its process. Soon enough you will see a little plant going out of the soil.
Just be sure to water soil every time it get dry. (avoid it to get fully dry)
I would avoid light until you see the plant coming out of soil. (Why?) Because the plant will try to reach sun as its first goal.
Then use 24hour or 18hour light cycle. (20hours can work as well)