I've been looking for brushes on deviantart and haven't found the specific blur brush I'm looking for. And most google links are for photoshop crap. Kinda annoying
there's tons of a good guides on dA for both, as I said, however. It really depends on what type of brush you're precisely looking for. blur brush is a bit vague, because I don't know much brushes people use except the fuzzy circle for a little blur. I personally uses smudge brushes for alot of my works, but that's because I was a extremely lazy. I do have alot of my friends and I old brushes/tuts saved on one of my old harddrives/cp if you still cant find any applicable to you
Also a little advice if you want to expand this sig shop ( as in, remove beta stage)
I would reccomend getting on top of some GFX design ethics--One alot of gfx people stress on from my exp is rule of thirds, however I wouldn't worry about that until a little more experience all it really is about is placing of render/stock or "focus" And something I always stressed on colouring because I hate monotone graphics so much, Some other elements are size,flow,depth, lighting/light sourse. They're self explanatory to some extent, but you can google them if not.
I know you didn't ask for CnC but even though I don't have time for it anymore, but I do adore GFX, and I'm a nice guy