Idk if you want some overall help on your art but I can see there are a few things that stand out as issues that could really help!
~ Contrast. All your art is very wishy washy, I personally love wishy washy but it does make images not stand out. Being on Deviantart, you may wanna crank up the vibrancy on Photoshop or whatever you use!
(not the contrast, do that manually)
I really like the use of empty space, around EVA and BOXHUNTER especially. The FURY image is your strongest though, stands out, has some solid contrast with shadows and light and is quite interesting!