Iron Man: A Space Odyssey

I feel like making the glowing sections of Iron man (his chest, hands and eyes) red.


I'll start with the chest glow.

To do this I will first use the same technique I used to make parts o f him blue to create a red glow around the center.
On Hue/Saturation I move the sliders until the area around the glow is nice and red, which also makes him all back to being red.
 I then again go on to Masks at the top and click Color Range...
Here we want to have Localized Color Clusters ticked and the pipette on the right with the + icon selected. I have localized ticked, as I only want one area to be turned red, not the entire image. I use the multiple sample option as if I were to just click in the middle of the white it wouldn't have much of an effect as the sample it is changing is white. So I click around the white ring so the area around the center which has a noticeable glow is red.
 
 I then select the inside of the center circle, and cut i onto a new layer.

I place this on a new layer so I can alter the opacity of it to get a better blending after I place the red image behind it in the hole.
The red image I'm using is that of a rendering of the HAL-9000 from 2001 a Space Odyssey.

I make a new layer, below all the current ones and paste this image in.
I then make the area I cut out from the center on a new layer invisible by unclicking the eye icon next to the layer.  I then position the HAL image so it lines up with the hole. I then rotate it so the reflection looks best.

Then because the image of Iron Man has his chest at a slight angle to the camera I hold crtl and click and drag on one of the corners of the HAL image so I can stretch it one way to give an angular appearance.  

Finally I hide the Iron Man layer so I can see all the HAL layer and cut out just the HAL circle.