Tap the layer button to display layers
Tap on a layer to select it
Press and hold to reorder layers; Overlap images to merge
Tap on the Settings icon for options
Choose Darkening mode to change the blending mode of the layer
Choose Brightening mode to change the blending mode of the layer
Slide the opacity cursor
Move
Scale
Rotate
Tap the eye icon to show / hide the paper
In “layer options” switch the transparency button to lock the filing to existing brush strokes.
Tap the Setting icon on the paper: Select paper grain, paper color or create your own