The following is a step-by-step tutorial or guide to paint 15mm Greek Hoplite shields. That being said, it can apply to painting pretty much any shield or freehand design from any hisorical, fantasy, or sci-fi genre. This one specifically focuses on a single colour design, but the method could easily be applied to multiple colour designs as well.
The method for painting the shields is pretty simple really. Overall it is identical to any layering type method that is commonly used in acrylic painting: you start with a dark base coat and then you move on to get successively lighter and lighter. Note that the above was done on a flat piece of sheet styrene as an example, but the scale is that of a 15mm Greek Hoplite shield from Xyston Miniatures. The following explains the steps:
Just for reference, here are the colours I used for the shield base colour. The first on the left there is Red Brown from Ral Partha, now Iron Wind Metals old line of paints (they are now discontinued, much to my chagrin). I stocked up on bottles, so it should be a few more years until I need to find a match among the craft paints at my local craft store. The second colour is a mix of Americana True Red, P3's Khador Red and IWM's Red Brown. The third is Americana True Red from their craft paint line (sometimes called orange-red), and the final is a pink that I mixed myself with all types of different paints (P3, craft paints, some Red Brown) with a base of IWM/Ral Partha Pink (the original pink was way too light!). Recently I started using the cheap craft paints instead of the over priced miniature paints; I'm broke and I find that I like the ultra flat quality of that stuff.
And for completeness, here are the colours I used for the design. The dark colour is Americana Cocoa, the middle one is IWN/Ral Partha Dun - which matches very closely to Delta Ceramcoat Antique Gold, and the final one is Delta Ceramcoat ivroy, but is pretty much the same as any ivory. So, that's the entire story for painting shields!