Step #1
Draw the 3-D figure of the outline for the bunk bed.
Step #2
Draw the stairs and the other enhancements across the drawing.
Step #3
Draw the other elements of the bunk bed that are required.
Step #4
Draw the other necessary elements as shown
Step #5
Draw some more necessary elements as shown in the picture.
Step #6
Draw the mattress and pillows.
Step #7
Complete the drawing by adding the necessary finishing touch.