Yeah, the white BG hurts it overall.
You can use the 'edit it' under the art to upload a revision pixel that has a transparent BG.
You are new tp PJ (welcome) and still learning the ropes and this kind of simple pixel is often sent back so in your next pixels try to pick up the skill level as much as you can, k.
When it comes to any pixelart addition its always on a case by case basis where we guage skill, experience, maturity, etc. In your case your description took it just over the edge...
"It's just a simple box. But it's a detailed box!"
I'm still giggling :)
That's a lovely box! But you should totally remove that white BG!
Listen to Jalonso. He's the wisest man around.
Btw, the "Hey!" text in the preview was super effective! I couldn't resist clicking!