I love both of these artists work - they have a load of Mortal Kombat characters designs on their deviantart accounts. I suggest anyone that likes MK fanart go looking for these.
Kitana's is good because it looks like an actual kunoichi might wear it. She looks like a warrior, not a supermodel. I'm not loving the hair, but that's only a small quibble. And yeah Reptile looks awesome. I would be quite happy to see him looking like that in-game. Having said that, my favourite look for him is still MK:SM. MK9 is a close second, then MK4.