When posting a wishlist, there is a certain way you should post it..
Examples:
Regal Set
[X] Regal Bed
[ ] Regal Dresser
[ ] Regal Armoire
[ ] Regal Sofa
[ ] Regal Chair
[X] Regal Lamp
[ ] Regal Table {3}
[ ] Regal Bookcase
[ ] Regal Vanity {2}
[ ] Regal Clock
[X] Regal Wall
[ ] Regal Carpet
Townsfolk
[ ] Winnie
[X] Elmer
[ ] Savannah
[ ] Wolfgang
[ ] Pierce
[X] Camofrog
Fruit
[X] Apples
[ ] Cherries
[X] Coconuts
[ ] Oranges
[ ] Peaches
[X] Pears
Redd
[ ] Invitation to Redd's
Layout
[X] <-- Signifies that you have the certain item
[ ] <-- Signifies that you do not have the item, but want it
Regal Bed <-- The item name
{2} <-- Quantity number (Although, once you get one you can order it from the catalog at Tom Nook's)
Keep in mind that if you do not put your wishlist in the correct format/layout, you will be notified to change it and/or it will be deleted.