It doesn't matter how you draw your art...

Look at me... draw what you see.

Lay a paper over me... trace me.

Draw step by step with shapes.

OR... use a grid... it doesn't matter how you do it... just do it... draw!

Draw from a photo... draw by watching/looking...
by observing the real thing.

Draw from memory... just draw.

Use your imagination...
come up with the best way for you to learn to draw!