Shake those bottles really, really well and squirt equal portions into a mixing container, then add a bit more white to create a light to medium golden color. Mix well!
I also added in some distilled water my mix to thin it down to a consistency where it would brush on thinly without leaving brush strokes.
Squirt some paint onto your palette or whatever you are using for a palette (plastic paper plates make nice palettes). Wet your make-up sponge and squeeze out most of the water. Then dab it into the paint, dab it around on the palette a bit to disburse the paint around on the sponge and...
It's a good idea to rinse the sponge between dabbing sessions as the paint can dry in the sponge, leaving dried bits of paint behind the next time you go use it.
Now, onto creating the "inside" of the dapples.
Anyhow, the first method involves the same color we used for the base (Camel + Lt. Ivory), applied with a thin brush. The brush I used is a cheap nail art brush purchased from eBay. It came in a set that cost me about $2.00 for 8 short handled brushes of varying sizes and shapes.
Here I dabbed and stroked and drew the dapples on. It might take several layers before the dapples are the same color as the surrounding base color.
The benefit of using a small brush is you can easily vary the size and shape of the dapples, making them look more like real dapples than polka-dots.
I took a cheap #7 round brush, cut the bristles straight across (like a stencil brush), then "rounded" the end by trimming the outside bristles on an angle.
Now, some people like to use a dry brush for the next step, but I prefer a damp brush. Wet your stubby brush, dry it a bit by squeezing it in a paper towel and then dab the lightly damp brush into the base coat paint, dab most of the paint out onto a paper towel and then dab the brush onto the horse. Yup, lots of dabbing going on again! This method will give you very round, rocking horse style dapples, but you can vary the size and shape a bit by dabbing with the edge of the brush instead of dabbing straight on.
You can also combine the methods, making the initial dapples with the cut down brushes, then refine and shape them with the fine, regular brush using thinned down base color paint.
There you have it - a couple of ways of creating dapples without using an airbrush.