In Photoshop there is function "show all" that will expand image as needed so everything would be visible.
If you want vector graphics then use Fireworks. Its simple and its enough to create good styles (my old styles before Morpheus were all created with Fireworks, Kail creates his styles with Fireworks). Photoshop is in my opinion much more powerful, but it uses completely different logic that you will need to learn and that's more complex than learning Fireworks.
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