Task: I decided to create a drawing for my mechanical engineering projects, so create a drawing of a line with the pencil size "1" in the Sketchbook app.
Steps:
Open the Sketchbook app.
Click on the pencil icon at the top of the screen to select the pencil size.
Click on the first pencil icon in the Basic section to select the pencil size.
Click on the cross icon at the bottom of the screen to remove this pencil selection window.
Scroll down from top to bottom of the screen to create a line.