This is a sample of how to create shadows using a light source as reference.
The two references coming from the light pole will help you create the shape of the shadow.
See the image for reference.
This image in NOT a sketch but a development page where you can explore concepts and later re-draw them in the sketch.
Remember to double check your perspective every time that you draw.
60 drawings in a weekend are a lot better than 120 in a day………right?
KEEP WORKING HARD
Demo, on How to Create Shadows