What would make you ask if something were wrong with that plant? It looks healthy and green bro. The slight yellowing that you're seeing inside the top leaves are the new growth that hasn't had time to adjust to the light. You usually see a lot of that after your plant is coming off of a night cycle. Good job.
I don't know how much you know about growing, but i have to tell u that is a prime example of a perfect mary jane plant right there. the crevices in the leaves are just normal ridges that will smoothen out when the leaves get more mature. dont worry bout it, ur plant looks perfectly healthy as far as i can tell by that pic