To create your own slide template:

• Choose Format | Apply Design Template, and browse through the dozens of pre-made templates that come with PowerPoint.
• If none precisely meets your needs, choose the one that comes closest to the color scheme you have in mind. Then, you can always choose View | Master | Slide Master or Title Master and do the following:
  • Delete any design elements you don't like.
  • Add your own graphics to the Master backgrounds so they'll be repeated on each slide in your presentation automatically. .
  • Change the formatting, position, size, and color of the Title and Text placeholders. .
• Remember: Any changes you make to the Title and Slide Masters will control what ALL of the Title and regular slides in your presentation look like.
• When adding a new slide chose one of the Auto-Layouts that includes a body text placeholder.