This simple brush can be used for caligraphy or drawing if you want somehwhat of a 3D look.
Sorry for any grammar or spelling mistakes ^^'

Only problem with brush is that I was unable to make it change colour so if you want to change it you will have to do it eather with the layer blending or whit the HUE
1st method(Layer blending)
1.Create a new layer
2.Make a clipping mask over a brush stroke.
3.Set the layer blending to "Colour"
4.Draw over with any colour of your choice
2nd method(HUE)
1.Press Ctrl+U
2.Change the HUE until satisfied