Ok, the dread plate is located in the 2nd floor of the old chateau, in the last room to the left, the draco plate is located behind the statue in eterna city, use the dowsing machine app of your poketch to find it, and the exp. share is in the beginning of the route 206, go to eterna city and then to the south before the cycling road, there is a guy with white coat he will give you the exp. share, i hope this can help you, and i have a dragonair if you want it.