Those flames and the entire forground/background are a composition of edited images I found on google. The entire workfile consists of around a hundred layers, so that wouldn’t be practical. I just typed in ‘flames’ in google and picked up some I could throw together and tweak. I suggest you do the same
Two more recent 3D projects I finished up.
3D illustration for a health insurance print ad. Designed the character, modelled & textured in Zbrush, lighting/materials/renderings in Keyshot. Composition & editing in Photoshop.
3D illustration for a Syngenta Powercell print ad. Modelling & texturing in 3ds Max/Photoshop, lighting/materials/renderings in Keyshot. Composition & editing in Photoshop. This one had an insane amount of layers, but was a hell of a fun challenge.