[Answer]-How do I get my pinterest share button to render my custom image in Django?

You can simply add your site’s domain either hardcoded or with Django site

&media={{your_site_domain}}{% static image_to_share %}

your_site_domain can be example.com e.g.

More on Django sites: https://docs.djangoproject.com/en/1.7/ref/contrib/sites/#django.contrib.sites.models.Site.domain