... this
what should I do?
Photoshop (or whatever you use) and add those images to custom button.
You could visit sites such as http://www.iconfinder.com and search for 'Play', 'Next', 'Back' and so on. There are a lot of buttons without need for you to make them. Then just add them to your project and use the 'custom button' type in interfacebuilder/code.