File Picker to Upload Photo

Can anyone provide with me a sample workflow that utilizes the File Picker in the Display Form activity that allows a user to upload a photo? We have having an issue getting this to work and keep getting this error...

 

_img_ alt="User-added image" src="https://latitudegeo--c.na53.content.force.com/servlet/rtaImage?eid=906600000000Bqi&feoid=Body&refid=0EM60000000DGwB"_/_img_