Hi Gonzalo,
The `GraphicsOverlays` collection also has methods to manage the order of the `GraphicsOverlays` it contains (Add, Insert, Move, Remove, etc.).
Within a `GraphicsOverlay`, you can also set a z-index property on individual graphics. A larger z-index means the graphic is higher in the draw order (for graphics in the same overlay).
bottomGraphic.ZIndex = 0;
topGraphic.ZIndex = 1;
Note: Graphics overlays *always* draw on top of layers in the map.
Thad