This wall definitely needs more work...
First,the girl's face looks strange,there's a green glow on it..she's also kinda blurry as well as her scarf and it also has a glow...I think it would look better if you just painted that scarf a little brighter red,so it would look really good as a contrast to the monochrome wall...
Also,the trees look a little too realistic for an anime girl,I think you should blur them more,so that would become less noticeable...
Also,some of the show flakes are really sharp and strange...there's even one that looks like a square...You just need a better brush for them,a softer one...and add more of them,but smaller...I think it would look better that way..
About the text...It's really hard to notice it,I probably wouldn't even see it,fortunately there were the red l's...I think you should make it white and use a different easier to read font...
I love that font,believe me I do

but it really doesn't fit the melancholic feel this wall has...
I hope my advices haven't offended you...I really didn't intend to be harsh...I just wanted to help...
Well,just keep practicing and you'll get better