no worries its totally fine !
if you want a little walkthrough, just go to submit > image and in the very top right hand corner, you choose "Add character" and there will be a dropdown option to do "add another users character" and then you just put in my username and navigate to the profile :3 its baically the same as submitting a pre-existing image in an alternate tab
you don't have to ofc just wanted to explain it in case you ever wanted to do that in the future because TH can be confusing sometimes