The main body shape is made with iWork/Pages Draw tool (Pen) which is at the end of the Shapes menu. Click several times to make a rough shape and then make it editable and smooth curves (Smooth Path) under the Format menu.
The picture below shows how fingers are drawn. To make it easier, increase the zoom of your document from 125 to 300 or 400 percent.
The picture below shows editing points (red dots) for the arm.
And here is the full picture. Add a speech bubble and type in your words — a promotional slogan, a political point or a piece of advice.
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