EHI Spotify bottle

Hello, world.

Today I learn how to make an interface for an object. And my homework is a Spotify bottle. This is an interesting homework that I ever made.

This concept base on my demands with the guidance of my teacher. I try to make it clean as much as possible. I focus on 2 main functions, the purity of the water and keep the temperature I want.

I would like to hear feedback from you, please comment below. Thank you.

P/s: Thanks @Quoc.nkv for the invitation :D