Select a predefined shape of photoshop, modify and use them.
Custom Shape Tool is just below the Type tool and beside the path selection
tool.This tool is a shape tool.With the help of Custom Shape Tool, we can
draw pre defined shapes of any size. We can also draw shape with perfect
dimentions.We are having many different pre-defined shapes.Just after selecting
the tool, we can see the pre-defined shapes in the options palette.
This is the Custom shape Tool.Go on to that tool and just click on it
to select it.
These are some of the pre-defined shapes which we can see in the options
Select the Custom Shape Tool and select the shape which we want to draw
and position the pointer inside the work area and just click and drag.
We can draw any shape with perfect dimentions by, just click and hold
the shift key and now drag the tool after selecting the shape.