To make it easer to draw, I will lay down an image of Pickle Rick on the bottom plane of my design.

Go to the toolbar and select Attach image to canvas. I used the image above to trace his face. Click ok, then create a new sketch on top of the attached canvas.

From here, I will trace out Ricks facial features using tools such as the circle, arc, and spline tools. More information about using Fusion 360's sketching interphase can be found here.