Okay, I've drafted a quick example to show my idea:

Green owns the city to the left. When this is completed (has a cad on its left), green will get 7 points, plus, because the card above it is of the same type, and additional 3 points (the number written on the top side of the card).
When the road above green is completed (has a card above it), it will be worth 8 points.
When the cloister to the right of green is completed (has 8 cards surrounding), it will be worth 9 points as normal.
The city of carcassonne, the starting point, is not worth any points. None of the other features will give green any points becaue there is no meeple orthogonal to those features. Cards may not be rotated.