How to draw arrows with photo decorator quickly?

Click "Draw" button on "Current Image" tab.
Click the arrow icon button on "Drawing Tools" window.
Click two times at different points on canvas. The first point is "from" point, the second is "to".

Ok, an arrow is drawed.

The arrow size, angle, color, length can be adjusted by clicking 3 handles.

Right click "B" handle to reset.
Reight click "A" handle to adjust size.
Right click "C" handle to adjust angle.
Drag handle to adjust position or create curve arrow.
Click "Pen" on "Drawing tools" to change the color and width of line.