Step one:
First draw half a trapezoid without a back cover.
Step 2:
Then draw a horizontal line in the middle, and then draw two diagonal lines to connect them to form the pants below .
Step 3:
On top, draw two vertical strips and one horizontal strip to form the strap.
Step 4:
Draw two more squares under the straps, and draw a smaller square inside.
Step 5:
Then draw horizontal lines on the trouser legs, and draw a semicircle pocket in the middle.
Step 6:
Finally, apply a nice color and the overalls are finished.