Thin your paints to the consistency of skim milk.
Plan out how you\'ll pick out the highlights.
(edges, light source direction, high points on plating, etc.)
Build slowly and blend smoothly.
PRACTICE!
Even I forget that practice is necessary for getting better at anything new. I\'ve found though, for smooth highlights, and shading for that matter, it is so much better if you plan them out first.
You might even try White priming and Black or Dark Gray wash before you start painting.
This will go a long way to showing you where to highlight in a relatively realistic and natural manner.
Hope that helps!
And if your are visual like I am, I would definitely go trawling the gallery.
Well worth the inspiration!