CSS and HTML are the main ways, and you've already got CSS. You could commission art to put on your page too.

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How do I do that tho, I understand the back found thing but not anything else

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How do you what? CSS and HTML? Commission art? Or put art in your page?

To add images in general, you use <*img src="IMG LINK">
Remove the asterisks.

You'll probably want to host it somewhere. I just use Discord. It'll probably need to be resized too. I use befunky, but I know some image hosting sites let you resize within it. You could also decorate with Lioden assets yourself and pull them from the wiki or item catalogue.

You could decorate with f2u pixels from DeviantArt, but make sure you link back to the art page and only use art that the artist says you can off-site.

To make a clickable image, you can do

<*a href="LINK TO PAGE"><*img src="IMG LINK"><*/a>

Remove the asterisks.

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