Hi there Green CC, Sorry but i have to disagree with Larimar here : there's no chance that light or air would make the leafs more green , skinny or bunched up . There's a couple things here : first about the skinny and the bunching, that's genetics, in other words that's just the phenotype you were dealt. Nothing to worry about. However i do see some symptoms beyond that : red stems and shiny dark green leaves with yellowing at the serrated edges of the leafs. that's a sign of N excess and magnesium deficiency.... You know what to do , i'm sure. Hope this helps ! 🚀