For the outline of the cow, I have painted this with a mixture of ultramarine blue and burnt sienna, so that you can see it more clearly. They are simply triangles, a triangle at one end joined onto it the same triangle but the opposite way around. A triangle underneath these to join them together and two small triangles on the end to create the shape of the cow. Notice the two main big triangles at each end of the cow, which also forms the legs, are right angled triangles. In other words, they are flat at each side.  

Now simply fill it in here and there using cow colour, which in this case is a mixture of ultramarine blue and burnt sienna to make black. A swath of grass underneath him and there we have a cow. All of this I have done with my No.8 round brush.

In this landscape I have put the cow with a couple of his brothers, or indeed sisters, but I’ve drawn it in using pencil and for the landscape itself a very simplistic sky using cobalt blue my 3/4" wash brush and suck out a couple of clouds. Whist this was still wet I changed to my No.8 round brush and dropped in the very very distant trees using cobalt blue and burnt sienna. 

Now drop in a little bit of yellow ochre using my 3/4" wash brush coming slightly further forward before adding my mixture of Hooker's green and yellow ochre for the foreground grasses. For the tree I used my rigger brush and a mixture of cobalt blue and light red. Also with the rigger brush in the same colour a few flicks upwards using the side of the brush to create a bit of rough growth next to the tree. Once this had dried I outlined the tree a little bit using a darker mixture of the same colour.

Now proceed with the cows as before and then a little bit of shadow underneath them using my 3/4" wash brush and there we are, complete pastoral scene with a few beasties.