Mixing your bubble solution with Distilled water makes better bubbles. You want a flat and clean surface with no bumps. Then take a small handful of the bubble solution and spread it on the flat surface.
Now dip your pipette into the bubble solution and blow your first bubble. When blowing your second or third bubble always dip the pipette into the solution as far as your can. This will help from posing the first bubble. Let us know in the comments how many bubbles in a bubble you were able to get.
You will notice when blowing the second bubble the first bubble will get bigger as you increase more air in the second bubble the first bubble will have that air in it also.