thank you my friendokidoki said:This might depend how you models this; while retrying this i did this with insetting the face and afterwards adjusting them to that oval shape. Whether if you simple scale the outer edges inwards (not on surface along Y in you blender screnshot) or even vertex slid them on the diagonal to stay on the original surface, when doing an additional inset and then extrude downwards..
But the loop at the "hole edge come up a little" when using subdiv. So this might be opimized by "simply" moving the control loops i bit downward.. (left original , right pushed down)