Make a new layer, use a soft brush with the color #e6802d to paint on the bottom right again. Change this layer mode to Hard Light 100%.
To make the fire reflection on the knight, create a new layer under the fire and glowing light ones. Use a brush with the color #ffd10e to paint on the strokes of the knight clothes and sword. Change this layer mode to Overlay 100%:
Duplicate this layer to make the effect stronger:
Create a new layer and use a soft brush with the color #ff850e to paint more red effect. Set this layer mode to Overlay 100%.
To change the light and contrast of the image, make a new layer on the top. Active the Gradient Tool (G) and choose Radial Gradient with default colors (black and white). Drag a line from the top left to the bottom right of the canvas and change this layer mode to Soft Light 100%. Add a mask to this layer and use a soft black brush to erase the right of the fire area as I don't want it to be affected by this Gradient layer.
To increase the movement and atmosphere for the scene, make a new layer and change the foreground to #e3e6e5. Active the Brush Tool and press F5 to change its settings:
Paint many dots with various sizes around the knight and edges of the image.
Convert this layer to a Smart Object and go to Filter > Blur > Motion Blur:
Apply a Gaussian Blur of 3.5 px:
Add a mask to this layer and use a soft black brush to make this effect more subtle.
It's time for coloring the scene. Make a Photo Filter adjustment layer on the top:
Create a Selective Color adjustment layer and change the Reds values:
On this layer mask, use a soft black brush to erase most of the fire area:
I used a Brightness/Contrast adjustment layer to enhance the whole light and contrast:
On this layer mask, use a soft black brush to erase the parts you feel brighter than you expected:
We'll add more glowing light to the fire area. Create a new layer and use a soft brush with the color #fb6525 to paint on the indicated area and set the mode to Overlay 100%:
On a new layer, use a soft brush with the color #e6802d to paint on the bottom right. Change this layer mode to Hard Light 100%:
Create a new layer and press Cmd/Ctrl+G to make a group for it. Change this group mode to Color Dodge 100%. On this layer, use a hard brush with the color #ffd72b to paint some sparks around the fire.
Double click this layer, choose Outer Glow:
Add a mask to this layer and use a soft black brush to reduce some dots opacity: