I need improve poor quality design

Information for the business: We sell online
Design details: I ordered design but the quality. I think, is poor. If someone can improve it please let me know. Please look:

https://dw3i9sxi97owk.cloudfront.net/uploads/stream/2016/05/1112824/19141101/new.jpg
https://dw3i9sxi97owk.cloudfront.net/uploads/stream/2016/05/1112824/19141213/new1.jpg
https://dw3i9sxi97owk.cloudfront.net/uploads/stream/2016/05/1112824/19141235/new2.jpg

We sell bum bags on internet.

bum bags files without bg
https://storage.googleapis.com/waist-bags/pph%20main%20images.zip

All others files
https://storage.googleapis.com/waist-bags/pph.zip

Key words
Waist bum belt money passport credit card bag fanny hip lumber pack outdoor sport hiking travel festival holidays pouch 4 zip pockets unisex coach bag wallet waist purse adjustable belt
Content on the front/back side and body: illustration
Ideas for the visual style: up to you
Extra notes: