ReDJstone

I still dont know where i can find it, im trying to add a shadow to an item i placed to make it look real and i would say that i can do it with the distort option but i still dont know where to find it on the ipad, and by the way, if you could tell me some ways to add a realistic shadow better than distorting a black image i would be very grateful, here are the images of the item, the bed i placed it on, and the item photoshopped on the bed without a shadow. Where is the distort option and what ways are here to make a realistic shadow for this item on the ipad? Thanks!