Include Edit picture and Security to camera-roll

Camera roll is a mobile app created by Lukas koller that enable users to load their library both Pictures and videos on android, it has a lot of good feature that make it very user friendly such as smooth Zooming gesture, displaying huge images without loss of details and so on.

I tried to edit my picture but couldn't which i believe it is one of the feature that should be implemented on the project having the option of edit picture will enable users to find the app more fun to use and also their should be a feature of security lock on pictures and videos which will serve as security on the users pictures and video.

The picture illustrate where edit should be

Suggested section for app lock on picture

I think the maker of camera roll should consider adding the above said features on the app to make it more user friendly, super cool and also make users to feel safe from unwanted access to the pictures and videos
The will be of added advantage to the project for it will make the project exceptional and users will find it good to use and will also attract more users.
Thanks