Each of the following aspects of poster creation is considered in detail ...

Planning	Before starting work on your poster, consider message, space, budget, format (single sheet or multi-panel), and deadlines.
Focus	Stay focused on your message and keep it simple. Create a mock-up and dispense with unneeded details.
Layout	Use a clearly defined visual grammar to move readers through your poster.
Headings	Use headings to orient readers and convey major points.
Graphics	Clear graphics should dominate your poster.
Text	Text should be minimized in favor of graphics, and large where used.
Colors	Colors can make a poster attractive and improve readability, but be cautious.
Editing	Edit ruthlessly to reduce the amount of text and focus on a results-oriented message.
Software	There are many packages you can use to create your poster.