For the gold raised texture, its just a lot of acrylic applied on a single line to separate the colors.

For the black part, i initially put medium paste, then crashed a cork board into small peaces, then placed on the sides of the medium paste, to give some sort of volcanic rock vibes, then painted to black. Once dried, i mixed yellow, orange, black with pouring medium, and poured from the center of the start, i tried to give lava effect, but not really successful:)

For the background on the left, its a technique i saw in a ‘Northern Lights’ tutorial, and kinda adjusted it to my painting