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

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

Now Ты click File--->Open and Ты select a фото Ты want to open. Then Ты crop and resize it. I usually choose 110 или 120 height. Now right click on little window and Переместить to new window. Now your image is in new window and Ты need to drag it to your banner. Then Ты use a little Стрела from the panel on the left and Переместить your image where Ты want it.

You do...

PNG is a strategically cropped layer. Ты can use it for your icons, banners, Болталка Фан art... Ты can make your own PNG или download one.
link

You drag PNG files same way Ты 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.