you still didn't give credit though in your description. and now you know that this person drew it, cite them. Not to mention you need to ask them whether or not it is okay to showcase their work like that.
Just because you rendered it doesn't mean you don't have to give credit and ask permission.
It wasn't me, broski. I'm just somebody that passed by and saw this. Regardless, the image wasn't photoshopped from that video, the original is separate from both this post and the video. it's a fan art. Here is the original wallpaper art: [link]