To get such sponsorship, you would need the following

You need to have a name in an industry you are at and relates to the sponsorship you are targeting.

Create content relates to your industry and have a healthy stream of viewers and followers, regardless 500px, Flickr, Instagram or youtube.

Have a website showcasing your passion in the industry and the biggest bonus that will strike you sponsorship is to have yourself written articles, books, webinar or on-site seminar.

I was once a sponsored in my sports photography and is not easy to maintain the contract renewal. Just a simple mistake or scandal will have them withdraw everything and even a possible law suit.

Good luck