Help (but more specific)

how do i make my profile look cool? (trying to figure out how to change the colors to black and orange with a toast background that you can see sorta through the main profile thing, like making it semi transparent, i alr have an image picked out, https://www.archanaskitchen.com/images/archanaskitchen/BasicRecipes_HOW_TO/Bread_toast_recipe.jpg)

but yeah no how do i implement that?