Since layouts are being funky, here is how I customize my profile!

Picture/gif in corner:

<div style="float:  ; max-height: 800px; position: fixed; (left/right): 1px; (bottom/top): 10px; z-index: 200;"><img src=" (image URL here) " width="x" height="x"/></div>

Music player (no loop):

<iframe width="0" height="0" src="https://www.youtube.com/embed/ (letters/numbers that come after the ‘v=’ here) /?&;amp;;autoplay=1&;loop=1&;controls=1" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen="" loading="lazy">

</iframe>

(example picture)

Picture/gif in text boxes:

<img src=" (image URL here) "/>

Tell me if you need a better explanation. I hope this helped!!