An orange sun and a yellow sky is a great backdrop to the silhouette of a tree or other shapes. This idea is so versatile if you want to start a journal or have run out of ideas for your sketchbook. Creating black outlines is also a great way to create a nocturnal scene.
I used orange and yellow charcoal and coloured pencils. I created the tree with a black charcoal pencil. This is so easy and a great meditation to complete at the end of the day.