Hey OP, I am not an expert when it comes to image editing so I am not sure whether what I am gonna ask is possible, so bear with me:
pic related is what I use as wallpaper. It's an upscaled version of the 1680x1050 original one. Is there any way to make it a little cleaner and less blurry? Some bits are pretty bad, like around her right knee.
Here's a link to the original, if needed:
http://konachan.com/image/a6acfca04<wbr>739758a068a3513a32346b8/Konachan.co<wbr>m%20-%2023153%20age%20kagami_sumika<wbr>%20muv-luv%20muv-luv_alternative%20<wbr>red_eyes%20red_hair.jpg