Start with a simple fruit photo. Use Google fruit photo.
To save with an iPad hold your finger down firmly and wait for the command screen save as. It should now be in your camera roll.
If save will not work for you a screen shot is possible. To do this use both buttons at the same time.
This can be edited if you wish in your camera roll.
In camera roll choose edit in the top right corner and choose the crossbar to crop the image.
Use Black and White Camera App to create Values.
Click the apple to begin, then find your fruit photo.
It should look like this when it is loaded.
Here is a good version to draw from.
Click the open folder, and original image to save your value photo to work from.
