Sketching with 1 Line
Choose at a photo with an object or an animal.
Look at it closely. What are the main lines. What aspects are important, so that we realize that the animal is a rabbit? The shape of the ears and the nose, the way it sits on the ground. I'm sure, if I'd only draw the ears, you'll already have a good hint, what I am going to draw. So look at the picture and focus on the main characteristics.
And then: let your hand learn the lines.
When looking at the photo, you will see the shapes, you will try to replicate them with your hand. And that's the best you can do for your hand: because this is exactly the way, your hand learns the lines of an object/a person/an animal. It's just about doing it. Simply drawing without judging the result. Because, the lines will automatically the more and more similar to the lines on the photo, the more often you draw it.
Wish you good drawing times :)