Old school FTW!!! BG design seriously brings back nostalgia to the old days of LSE's AnimeBGX and Red Lee's MixedMedia. Don't see people pulling that kind of BG anymore. Maybe one day I should try Red's grunge style. Always loved her grunge walls.

Image seems to be in need of some cleaning up. Scan grain can be seen on Deedlit's dress. I think the images need some sharpening as well since their faces have that blurry effect.

SFX is classic but needs some cleaning up as well. The light ring FX has that anti-aliasing effect (due to resizing?) and some of the other design elements are kinda jaggy. For the jagginess, I'd just maybe use the pen tool to smoothen out the edges. As for the anti-aliasing effect of the ring, maybe re-creating it on a larger canvas and then downsizing it would do the trick (that's how I do for my lightwave effects). Maybe apply some gaussian blur on the zoom FX as well to remove the grainy stuff.

Not really into heavy pink even during my early walling days. A softer shade of pink or some alternative soft colors might be a better option.