Step #1
Start the drawing by sketching L shape as shown. Add similar shape below it as well.
Step #2
Make four ovals.
Step #3
Draw outline for shape as shown.
Step #4
Make buckle & front shape of the roller skates as shown.
Step #5
Make shoe sole and shape as shown.
Step #6
Make two tyres.
Step #7
Make further two tyres.
Step #8
Draw designing shape over the shoe as shown.
Step #9
Finally, make necessary improvements to finish.