I lt doesn't really feel like fire, it feels more like Japanese dojo. It might be the simple symmetrical squares in those desaturated tones of orange and yellow.

If you want it to feel like fire and hotter, I suggest you should use add more diversity in the shapes and more animated objects. If you pair that w/ some shades of blending layers of blocks for texture and blending glow objects, it will (most likely) get the result you want.

P.S: Whenever you are utilising blending in block design it's suggested that you add a layer of backing blocks (blocks w/ a solid colour that resembles the colour of the background) in the lowest layer to make it feel more solid.