Leafs curlings, plant too small

Hey guys, I'm new here and new to growing aswell, my need marijuana plant is small and the new leafs (only have 2 til now) are kinda curling down, i though it might be overwatering but i want a confirmation from u guys. What am I doing wrong? Is this bad?

Regards,
Corsys
Pic:

How are they being grown? Which soil are you using? How often are you watering? Are you using nutrients? This all depends on how they will grow... The plant is fine now... The curving is what different strains do...

Growing in a homemade pc grow box, soil was bought on a seeds website, watering 2 on 2 days, no nutrients. Thank you for the quick reply by the way