Samsung Galaxy S6 edge+ User Manual page 153

2. Tap the picture you want to modify.
3. Tap Edit > Decoration > Draw.
 Drawing tools display.
4. Use your finger to draw on the picture.
Tools and options are:

Pen: Select a pen type, stroke size, and color.

Erase: Use finger as an eraser. Tap again for additional options.

Undo: Undo the last action.

Redo: Redo the last action you undid.
Camera and Video 141