You can create your own custom application icon(s) using the images in your Gallery. Your customized application icon(s) are only applied to icons on your Home screen. The Applications screen is not affected.
Touch, hold, release, then tap an icon to edit it.
Touch and hold the icon you want to customize, then release the icon. An editing icon appears at the upper right side of the application icon.
If an icon you placed can be resized, you will see a blue box around the icon after you touch, hold and release it. Drag the edges of the box to resize it.
Tap the application icon.
Tap the icon design you want from the available Theme icon choices and change the size (if desired), then tap OK.
OR
Tap Photo icon, then tap Add new. Set the size for the icon, then tap OK. Select the image you want to use for the application. Crop the image if necessary, then tap OK.
Your custom photo icons are saved so you can easily select them for any of your icon images.