The leaves on all my plant seem to be too large.

I’ll bet you are right, and the plant was grown out of water. None of the new leaves have looked at all like the ones originally on the plant. Good to know that I’m not screwin up the plant, but nonetheless disappointing.
 
If you feel like the tank is getting crowded and overgrown, do a big slash and burn... Leave the choicest leaves, and rip out the rest. Get some new plants and try your hand at them. If you're new, don't try to resign yourself to one particular tank layout... Find what you like, and run with it. If you know that you can grow plants well (which is pretty obvious judging by the pics), then look into developing an aquascape instead of just a cluster of plants. If you like a tightly packed tank, look at dutch scaping... If you dig on pristine natural scenes, look into Takashi Amano's Nature Aquariums (ADA). Your plants having large leaves is not by any means a problem, but a marker that you're doing something right.
 
As I learn more about acquascaping I am becoming fond of the Amano style. I have not seen nor heard of the Dutch style, I will have to look into it. Slash and burn is what I’ll do for now. This first tank, my learner-tank has been a huge success( thanks in large to everyone at Aquaria central) . I am now thinking of it as a grow-out tank for my next few tanks.
 
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