Create a group for the layers made in the step 23, 24 and 26 and add a Curves adjustment layer to increase the contrast and color of the effect. On this layer mask, paint on the bottom of the abstract circle to reduce the effect there.
Make a Hue/Saturation adjustment layer to enhance the color and vibrance of the effect.
Create a new layer and hit U to activate the Line Tool , 1 px stroke with black color to draw several lines on both sides of the columns and on the abstract circle. Hold the Shift key while drawing to make the lines straight.
Create a group for the line layers and add a mask to this group. Use a soft black brush with the opacity about 50% to blur some parts of the lines.
Open the asteroids image and select the rock on the bottom left to drag into our canvas. Set this layer below the columns group.
Use the Ctrl+T with the Warp mode to tweak the top and bottom of the rock become longer and sharper. Flip it horizontally (Edit > Transform >Flip Horizontal) and use Ctrl+T to rotate, make it smaller and move it to the area with the red details on the left.
Duplicate this layer and use Ctrl+T with the Warp mode to change its form a bit. Move it to the space between two lines on the top right.
Take other rocks from the asteroids image to add around the lines area. Use the Warp Tool to tweak it into different forms.
Make a group for the rocks and use a Curves adjustment layer to increase their light. On this layer mask, use a paint brush to refine the light and shadow on the rocks following the light on the eagle.
Open the textures 1 image and choose the texture 29 to add to the main canvas. Lower the opacity of this layer to 25% and set it on top of the layers.
Make a Curves adjustment layer (set as Clipping Mask) to brighten the texture effect. On this layer mask, paint on the middle to remove the lightness there.
Take the texture 8 from the textures 1 image pack to add to the working document. Use Ctrl+T to rotate it and change the layer mode to Multiply100%. Add a mask to this layer and use a paint brush to remove the particles on the lower area.
Duplicate this layer twice to add to the top right and the middle of the canvas to add more particles to these areas more. Use a layer mask on each of these layers to remove the unwanted details.
Make a Color Fill layer on top of the layers and pick the color #1c1b19. Change this layer mode to Exclusion 100%.
Create a Curves adjustment layer to increase the contrast of the scene . On this layer mask, use a soft black brush to reduce the contrast on the head and top of the eagle and the left.
Make another Curves adjustment layer to increase the contrast more. On this layer mask, vary the opacity of the brush to reduce the contrast on some parts below or anything you feel too dark.