In case 你 don't have Photoshop, 你 can download it link

Now that 你 have Photoshop, we can get started.
First 你 need to click File--->New---> width 800, height 100 pixels. Then 你 click Ok and 你 have a background.

Now 你 click File--->Open and 你 select a 照片 你 want to open. Then 你 crop and resize it. I usually choose 110 或者 120 height. Now right click on little window and 移动 to new window. Now your image is in new window and 你 need to drag it to your banner. Then 你 use a little 《绿箭侠》 from the panel on the left and 移动 your image where 你 want it.

You do...

PNG is a strategically cropped layer. 你 can use it for your icons, banners, 随意 粉丝 art... 你 can make your own PNG 或者 download one.
link

You drag PNG files same way 你 do with link

Here are some PNGs, all from Deviantart:
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I didn't test all of these so sorry if some are not very good.