A linen canvas is the best surface ;)
Answer:
Most common photo apps can crop photos on their own. If the photo is on your phone, you can use google photos or any other default app to crop it and then transfer it to the computer. This can also be done through the computer with whatever app you use to view the photo.
Explanation:
It's an f clef not a c clef because it's located on the f note i would know considering the fact that i've played piano for 3 years