It took me too long to try this exercise of scribble lesson. I was thinking to do earlier but was not enough time to sit down and do it. After my work it was already very dark so I di not have natural light, with lights on the image looks more yellow rather than white. That is why I decided to do it today afternoon even though it was another busy day today.
So, here is the first step of apple, I just made the main shape and approximate highlights and shadows. As the next step I just added more texture and background.
*I hope next time I will try to get sooner with my homework :)