Apps Designing an App - GIMP/Photoshop

[guavamelon]

I'm a total newbee to mobile app development and am having trouble with the graphic design part although endlessly trying to find tutorials about it.

I am using GIMP to create graphics such as buttons and background but don't have a proper understanding of the process. Do I create a background and then layer it with the buttons and then save each layer separately? Do buttons have to be squares or circles or can they be stars for example? Do I need to create every background and button as a 9patch or do I just create 2-3 different resolutions? and finally where do I set things like dp?

 

[TomasRiker]

I can answer the 9-patch question.
Yes, if you want your buttons to nicely adapt to different sizes, then 9-patches are the way to go. If all of your buttons are the same size, then a regular image will also do the job, but I recommend a 9-patch.

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