requesting gfx critique

[Llust]

what i'm used to working on is a forum sized 200x400 canvas, so larger canvases are a bit of a stretch for me. i'm looking to improve my gfx, but that's something i'm struggling with as tutorials on youtube and deviantart don't help much. i want to work with different themes since what i always work with is pastel/cute. whenever i try going grunge or something, it doesn't work out. so if anyone is interested in helping me out with that, i'd really appreciate it. anyway, let me know what you like and don't like about my work and possible throw out suggestions on what i can do to make it better. larger canvases are what i primarily need help with.

Spoiler: bigger gfx

(^i'm aware of the pink line)

Spoiler: signature banners

these specifically are finished banners that look rather incomplete, but i didn't know what to add to them

 

[Locket]

They look really good, I actually have nothing to say about them!

 

[Llust]

bump

 

[DarkDesertFox]

These look really nice! What is exactly is your struggle with the bigger works?

 

[Horus]

If you want this to work on, I'd say work on your text because they get lost in the signatures. Your signatures are also pretty saturated and could use some contrast and I think it's because you use adjustment layers so it's applied to the entire signature. Try to use a mask so you can only apply it to the areas that need it. Overall though, I think your signatures are really nice. Specially all the textures.