Silhouette/stencil

[Captain_Kokonut]

Is it possible to create a silhouette/stencil with this app?

[Kenneth Kawamoto]

Sure - I'd use Layer Mask: https://helpx.adobe.com/uk/photoshop/using/select-mask-on-ipad.html

[Pattie-F]

Another option is to use select subject and then add a new layer and fill it with black. 

Make selections (shows the select subject feature)

Pattie