This tutorial was written by my for WAMP.
In this step by step, I want to show you how I usually paint steel NMM. I've tried making a picture in between each step, but sometimes hardly anything can be seen on a picture, so those pics are left out.
For this tutorial I painted the halberd staff of the high elf lord Caradryan.
Before I start working with paint, I like to make a simple sketch in which I block in the shades. After drawing the sketch I slightly squish my eyes and look if the shading/highlighting could look realistic.
For painting metal, I use the following paints:
At the strong shades I use black (1 in picture below). For the extreme highlights I use pure white (13). The middle colours consist of a slightly blue-ish grey (French Mirage Blue by Vallejo)(5) and a grey off-white colour (Pale Grey by Vallejo)(9).
On my wet pallette I create mixtures between the colours. This step is the same for all colours, but I describe it only for shades 1 to 5.
Shade 1: pure black
Shade 5: French Mirage blue
Shade 3: is made by mixing colour 1 and colour 5 in a 1:1 ratio
Shade 2: is made by mixing colour 1 and colour 3 in a 1:1 ratio
Shade 4: is made by mixing colour 3 and colour 5 in a 1:1 ratio
All the mixed colours are then diluted to 1 part paint, 2 parts water.
Now it's time to start painting. The mini is primed in white.
Step 1: Paint the whole area in colour 7
Step 2: Start by shading the areas with colour 6 and then, in a smaller area colour 5. With each darker shade, you should paint a smaller area within the already shaded part. Try to 'push' the paint towards the direction of the darkest shade. Use this method with every step.
Step 3: Shade with colour 4
Step 4: Shade with colour 3 and then 2.
Step 5: Shade only the smallest area with colour 1, black.
Step 6: In this step I made the shaded are a bit larger, mainly by adding larger areas of colour 5.
Step 7: Go back to the basecolour (colour 7), try to blend the lightest shades with this colour.
Step 8: Start by highlighting by applying colour 8 in the same manner as you painted the shades (with decreasing the painted area and by pushing the paint towards the highlights)
Step 9 (no picture): Highlight with colour 9
Step 10: Highlight with colour 11
Step 11: Highlight with colour 13, pure white.
As you can see, I did not use colour 10 and 12, because there is not so much difference in brightness I don't think it is necessary to use those.
Step 12: Carefully clean up the transitions between the colours. You can make this step a bit easier by diluting the paint a bit more. When using very dilute paint, be careful to wipe your brush before applying the paint to the model, you don't want the paint to run. Additionally, add a thin line of pure white to the sharp edges on top of the halberd. Applying this with the side of the brush will make it much easier to control.
Step 13, last step: Make a glaze of Liche Purple (GW), 1 part paint, 5 parts water. Carefully apply this to the darkest shades, for adding a bit of colour. Make the last clean-ups and the NMM is done!
I hope you enjoyed this step by step. I'm hoping to write some more in the near future, so if you have any suggestions or comments feel free to share them.