Before we go further is very important to save your file twice, once under the current name, and the second time under a different one, I name my second one merged shipyard.psd This one we will be our work file now. Set background invisible layer the chain layer and go Layer-Merge Visible(Shift+Ctrl+E) name the layer roof, go Select- Load - Selection (Ctrl+click) press the X key and in the Channel Palette click on the Save Selection as Channel icon. Go back in the Layer modus and open the sky.psd file from on the images folder. Copy and Paste or drag the image in your document under the roof layer and name it sky. Now scale the sky layer to fit and go Filter-Blur-Gausian -Blur and set a Radius of 3 pixel. Duplicate the sky layer by dragging it in the Create new Layer icon, place the new layer under the sky layer and name it sky hue. Go Image_Adjustments-Hue/Saturation (Ctrl+U) check the colorize box and set Hue - 54, Saturation-30, Lightness-0 Select the sky layer and blending mode to Soft Light and the Opacity to 50%. Now we do the same with the roof layer. Duplicate it, name the new one roof hue and place it under the roof layer. Go Image-Adjustments-Hue/Saturation (Ctrl+U) check the colorize box and set Hue-50, Saturation-30, Lightness-0. Select the roof layer and set the Blending mode to Hard Light and the opacity to 70%.
Open the texture.psd (I made that texture using a scanned, scratched plastic sheet ) file on the images folder, drag it in your document under the roof hue layer name it texture and set the Blending Mode to Soft Light. Open the paint.psd (for this one i scanned a painted cardboard) file now from the same folder, name it paint and place it under the roof hue layer. Set the Blending Mode to Multiply. Click on the sky hue layer to have it active and click on the Create new fill or adjustment layer icon in the Layer palette. Select Level and darken the sky hue a bit more like in the image.
Add a new layer, place it under the Levels1 layer and use the Gradient Tool(G) with a Foreground to Transparent preset change the color to a dark brown #312901 like in the image(imageno18) and with drag to fill the layer from left bottom to right after that set the opacity to 90% and Blending mode to Multiply in order to darken the left bottom part of the background.
We are now almost done. At this point you should do some cleaning and retouch work, zoom in and see if the margins are clean, add shadows were is the need using the Burn Tool, or highlights with the Dodge Tool, use the Blur Tool(R) with a small Strength to blur areas a bit (the back of the ship for example) or the Sharpen Tool to sharpen parts like the Lock for example.
When all that work is done select the roof layer and click Create new fill or adjustment layer icon in the Layer palette. Select Color Balance and use the Following settings for the Midtones: Red: +4, Magenta: -1, Yellow: -10, Shadows: Cyan: -3, Green: +2, Blue: +3, highlights: Red: +5, Magenta: -5, Yellow: -15.
After you've don all this select the texture layer and drag it on the Create Layer Icon in the Layer palette to duplicate it. Place it over the Color Balance layer and set the opacity to 70%. Now we have to set a new Alpha channel, for Ctrl+click on the roof hue layer then change to the Channel palette and delete the Alpha 1 channel, press X and click on the Create selection as channel icon to make a new one. Go back to layer palette now and add anew layer on the top, name it warm light. Now use the Gradient tool with a Foreground to transparent Gradient Type and choose a orange color #C07B03 for the foreground. Then set a gradient from right top to left bottom.
Set the layer Blending to Soft Light and the Opacity to 80% and go to Filter-Blur-Blur More to blur the color. Now go Edit-Fade Blur (Shift+Ctrl+F) set Opacity to 80% and Mode to Multiply.That's it. We have the image and the mood I want to reach.
Save your .psd file now. Of course from this point on you could experiment more, trying to change the mood using other hues and Color setting, you can add more gradient layers to darken the left part more and warm the right part and so on. I always save a .tif file after that in another folder to have the final image for the case I need it, and to have a backup of the file.