Now, change blending mode of shadows layer to Multiply.
Add new layer with shadow. Use big, soft, gray brush and draw something like triangle.
Like before, change blending mode to Multiply - it's great mode to whole shadows! :)
Night isn't ready yet. You should add night colors to your image. To create this effect, add adjustment layer with Color/Balance (marked shortcut or Layer > New Adjustment Layer > Color/Balance).
Add new layer (Shift+Ctrl+N, Layer > New > Layer... or marked shortcut). Pick big, orange brush. Draw glow of your light source. Door's line will guide you! :).
It should be glow, not something solid. To fix that, choose from top menu Filter > Blur > Gaussian blur. Set it as shown.
Change blending mode of created layer to Soft Light. It will gently lighten your work.
Add new layer (Shift+Ctrl+N, Layer > New > Layer..., or shortcut). Now you should create true light source. In my vision behind doors is fire. And whole room is burning. I used 7px hard round brush (#f9d77b color, pressure size) for drawing it.
If you don't have pen tablet, you can use pen tool. Set brush, like in step 18. Use pen tool to project desired shape. Then, click RMB, choose stroke path and check simulate brush pressure. You don't have to project whole lines at once. You can do this on other layers, then merge it.
Cool! For make created layer more realistic click on it with RMB. Then, choose blending mode from menu. Go to "Outer glow" settings.
Duplicate created layer. Choose and drag it on new layer symbol. Then, set "Fill" to 0%. If you decrease "Fill" like here, layer will be transparent, but her effects (here: Outer glow) will be still visible.
Now from top menu choose Filter > Blur > Gaussian blur. Set it as is shown.
Create new layer (Shift+Ctrl+N, Layer > New > Layer..., or shortcut). Pick 1px soft round orange brush. Draw lights on branches. Just follow its line.
Light also goes on doors and column at left side. You should mark it. Add new layer (Shift+Ctrl+N, Layer > New > Layer..., or shortcut). Pick 17 px soft brush. Use the same color as before.
Add mask to created layer. Pick bigger brush and mask unwanted lights.
Again create new layer. With the same brush settings as in step 22 draw lights on doors and column. Follow the edges of those things.
Now you'll make sparks. Just add new layer and draw randomly dots near the light source. Also, for this, you can use any kind of "debris" or "dust" brushes, or just use preset brush from Photoshop - as shown.
If you like effect, you created, click with RMB on this layer. From menu choose Blending options. Go to "Outer glow".
For creating hair, add new layer. Pick 1 px soft brush and draw hair strands. Try to flow with your image. I used colors from light orange (right side) to light blue (left side).
Drag and place to your file crack texture. From transform menu (top bar) click on "Warp mode". Transform it as shown.
Change blending mode of this layer to "Multiply".
Add mask to this layer by shortcut. Use soft brush to erase rough edges.