Social media sharing app concept UI

Hi there!

What if I need to design some sort of social app where people could share their videos and photos and don't be stuck to the square ratio?)

Here is my vision of that application! What do you think about it?

Hope to see you again in my profile or shots, and, you could check out my other works from my own December Design Challenge:

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December Design Challenge navigation:
Title shot | 02 | 03 | 04 | 05 | 06 | 07 (current) | 08.1 + 08.2 | 09.1 + 09.2 + 09.3 | 10.1 + 10.2 | 11 | 12
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See ya!