Create an NFT and deploy to a public testnet, using Truffle

I completed this and it was a really good tutorial!

There is one question that I dont know how to figure it out. Can somebody drop any reference for me about how to make my own image on twemoji. I tried to search for some, but just didnt find anything thats helpful. I want to upload my own img to twemoji, to get my own twemoji link (ex: https://twemoji.maxcdn.com/svg/1f40e.svg). Can I upload my own img or I have to “draw my own” from twemoji?

Thanks for your support!