Add a layer mask and use Brush Tool (B) with black color to remove effect from unwanted parts.
Duplicate layer with “Plastic Wrap” filter (Cmd/Ctrl + J), clip it and change Opacity to 15%, Blending Mode to “Color Burn”. This layer bit returns the natural color of the skin and remove excess white tone after the filter is applied. Now you can merge all layers with the model into one (Cmd/Ctrl + E) or in a group (Cmd/Ctrl + G). Working with model retouch is finished.
Let’s proceed to the more tedious and important part. The next couple of hours you spend for one occupation – the creation of robot parts. In principle, it is very easy! Create a new group (Layer > New > Group or use icon on Layer panel) above model layer (you will have a lot of layers) and then follow the procedure. Create some support and large ellipses. I use Ellipse Tool (U) with black fill (or use hard brush with large size). This will be our main parts.
Set hard brush with Size: 3px, Opacity: 100% and black color, take a Pen Tool (P) and draw path where you need it, do right click – Stroke Path – Brush and do not forget to remove the path – Del on keyboard or right click – Delete Path. Also is welcome the independent use Brush Tool (B). A little advice, you will be much easier and faster to do this if you start with central lines. So you quickly realize that you want to draw. The most important rule in this activity is to create a new layer for every one stroke.
If you need to fix a point in the path, use Direct Selection Tool (A) to quickly switch to this tool, hold Cmd/Ctrl. Keep up the good work and you will get a good result! The main thing do not doubts. This is my result. When you’re sure to accurately drawn and satisfied, then Merge all detail layers into one (Cmd/Ctrl + E or Layer > Merge Layers).
Now make there lines are real. To the layer with mechanical parts add style “Bevel & Emboss”, double click on Layer or go to Layer > Layer Style > “Bevel & Emboss”. In the window that appears set settings like shown in the image below. As you can see there was the effect of the internal circuit, which makes parts a realistic, but still not enough.
Also, if the effect will be in unwanted places, simply convert layer into Smart Object (Right click on layer > Convert to Smart Object), add a layer mask and remove unwanted effect. Clip this layer on model layer (Cmd/Ctrl + Opt/Alt + G) to hide the sticking out part of the circles.
Duplicate the model layer (Cmd/Ctrl + J) and place it above the layer with Curves, hold Cmd/Ctrl and click on curves thumbnail to select them. Go to top model layer and delete (Del on keyboard or Edit > Clear) selection. To Deselect use Cmd/Ctrl + D or Select > Deselect. Add a “Bevel & Emboss” style. Set the settings, as shown in image below. Clip this layer to previous.
Now I added a texture to fill the space inside the model. Do to File > Place and add image “cables_01_by_ribot02-d55feku”. Move this layer between two layers with cyborg effects. Hold Cmd/Ctrl and click on curves thumbnail and add a layer mask to remove all texture except on curves. Be sure to clip this layer (Cmd/Ctrl + Opt/Alt + G). Use Soft Round brush with Size: 35px to remove on a layer mask a part of texture from edges of big circles.