Before Starting with Designing Aspect let us learn about the Designing Principles and the Color Scheme required to bring the feel out of the image or logo , ie what we create should be self explanatory via its shape and color scheme ie being used.

IMAGE COURTESY-VISUAL DICTIONARY

The above image shows different color schemes used in our logo or images ( magazine cover, photo, templates, manuals etc ).

• The Triangle at the center of the Diagram show the Primary colors they are RED , YELLOW , BLUE .
• The Hexagon Surrounding the Triangle depicts the Secondary Colors such as 
• Yellow-100%
• Yellow-50%, Red-50%
• Red-100%
• Red-50%, Blue-50%
• Blue-100%
• Blue-50%,Yellow-50%
• The Circle Surrounding the Hexagon shows us all the Tertiary Colors derived from secondary colors.

As you can see the diagram used above to make you understand design principles in itself is a self explanatory. This is  the main Law Of Design Principle.