How to build a phone case selling website?

Hey guys. I've trying to build a phone case selling website in wordpress. I've facing certain problema like;

1. Do I have to upload every mockup for each kind of phone case I'll be selling?

2. From where do I get the mockup for specific kind of phone case? I'm using paceit for now but It doesn't have phone companywise varients in designs.

3. Is there any plugin or software or anything which can get this done easily?

Thanks in advance!