First time growing

During the second week the plants grow pretty well, as i notices in one of the images in one of my plants the shell never fell so it was smaller than the others and for a moment i thought it was gonna die :(, luckily i decides to open the shell with a knife and being really careful. i took this decision because i was able to see some leafs trying to reach put of the shell, i didnt film that or took a ic but in the photo you can see the shell and that the leafs are considerable smaller that my other plants. i will try to upload more pictures of this week but im editing them so you can see the better. also my plants were a little smaller because i put more soil. i didnt use fertilizer until the end of week 3, now i know that i should started fertilizing in this week. i also put my light a little bit down (5 cm) because my plants were stretching a lot.