You need to select the brush and set the number of segments for duplication. The available brush options: color, transparency, size, emboss and blur. Draw using three tools: brush, eraser and brush to "paint overlay on top" mode. If you select the tool a second time displays the dialog to set the parameters of the brush.
Realized the saving picture in .PNG file that is stored in the directory "/sdcard/Circle Pictures" of the primary external storage. You can open the saved files use the menu option. The image file can be sended or share on social networks with applications installed on the device.