A Blackbelt In Breakups

Hello
I´m a graphic designer and at the moment i am creating a mockup for bag designs.
It looks like this:
[link]
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I still need some designs for preview purposes and i wanted to ask you kindly if i can use this artwork for it.
I will not sell or print your design in any way.
And of course i will feature you in the description of the mockup, so that people get linked to your design.
Thanks in advance, i´m looking forward to your reply