
“Unfortunately this item does not meet our current quality requirements and cannot be accepted at this time.
The overall design quality of your submission does not meet our standard requirements and should only be resubmitted after being significantly improved”
It’s too Photoshopped ...
There’s far too much going on – every element in the file screams for your attention; this generally results in the poster looking far too busy.
Tone down the gradients and effects. Decide what you want the viewer to focus on and what you don’t.
I would tone down on the gradient effects and not have them so heavy, also the background seems to clash with what’s going on upfront of the design for example the guitars and skulls.
When I look at the flyer my eyes don’t know where to begin because there’s too much happening. Maybe try using the background in a different way like having it faded rather than in full opacity.
Actually You have to work a lot for it. The reviewer said all, it is not at that standard. You have to work on all the elements and aesthetics. It lacks contrast and the styles must be improved. You have to work on typography as well. But first brows some flyer already accepted here. Best of luck 
thanks alot guys 
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I think this will be good with some more work. I like the 2 fonts you’ve chosen for the main titles and band list. Like others said I think the main problem is the background doesn’t work, so the text isn’t standing out in an attractive way. Actually maybe you should flip the guitars round, since they are upside down. The other error you’ve made is putting Slayer at the bottom of the bill! In fact you should remove Soulfly and replace them with Immortal. That would improve the whole thing! 
i think the colors give a cold feeling, hard rock and heavy metal are full of explosions and look dynamic, the skeleton looks like a bug it took me a while to understand its form. more warm colors, more action….that’s my opinion….
