Now-a-days shpoing Bag is a great brand of a digital Country. So we made a shoping bag Mock for a designer who makes a many of different design & input on this. He can makes a good designer, who will be able to use a bit Adobe Photoshop. 
So try it...it's free for you. Help file included on zip file. 

hope you guys like it...

Download link Here: 
https://drive.google.com/open?id=0B0tsi4TVBPKCYlBXOE11Rmx1dVU