Ans. First Solve the test on your copy. Preferebly use A4 Size Sheet or Copy/Register. Leave 5-6 lines blank on first page so expert can give remarks easily. After that, write your Name, CA ID, Class, Subject Name, Test Type.
Then start solving your answer. Keep atleast 2-3 line space between each answer written. So expert can give remarks easily and readable form.
Now use CAM SCANNER app to make pdf. Click photos of full page in proper lighting and focusing. This app will make pdf file of your photos. now you can upload this file by clicking on upload button given on website.