I personally don’t have very much control yet either, so I know what you mean. Something that really helps me is to imagine the place/object/person is in a place I can’t see it/him/her and then go to that place.
For example, if I wanted to get out a lucid pill, I would say to myself, “When I reach into my pocket I’ll find a lucid pill.” I’d reach into my pocket and then voila; the lucid pill is in my pocket.
If you want to see a person, you might try saying, “When I turn around, I’ll see [blank].” Turn around and see if he/she is there.
This works with whole scenes, too. You can just imagine that whenever you open a door your dream scene will be on the other side.
Those are the tricks I know. Until you get really good control you’ll prolly have to use such tricks in order to make things appear. But, in any case, I hope this helped.