Once you place a shape on the canvas use the above sliders to perform rotate and zoom actions.
ShortCuts :
1. Press D for Delete.
2. To remove a shape click on it and press Delete.
Please do not draw emojis
Please Zoom out a little if your using windows for better resolution.(if ur on windows)
 This is a click and drop method not drag and drop.

Try to express the above shown feeling through these shapes and colours.

First select a color and then a shape and place them on the Canvas.