well we are here to help dr wiccanmaid is in the house.
now to dress your avatar you first go to your inventory.
you will see what they call shelves. on these you will see your wearables. you want to double click on the item you want to put on. the closer to the center the better. the interface to dress your avvie has always been a little bit glitchy so do not be suprised if it does not work the first couple times.
