If the goalkeeper is able to score, she might be used to this. I have tested the method a couple of times and often with success.
The attacking team puts a pressure on the defense and moves it away from the replacement area.
In the meantime the goalkeeper has been called to the replacement areas, as if some instructions must be given. Instead of stopping the goalkeeper continues running against the opponent's' goal.
At the correct moment the closest player puts a screening on the outer side of the defense and the goalkeeper receives a long pass and should have plenty of room to make the shot.
After the shot it is - of course - very important that the goalkeeper is very fast in her returning to her own goal.