I was in the same situation when I first started playing the ocarina. I had heard sound samples and seen videos of people playing so I knew what they were supposed to sound like; the problem was that I didn't sound like that at all. At this point I had several thoughts frequently pass through my mind, questioning my abilities and the qualities of the instrument. I considered that perhaps I had a defective model, maybe something was loose or wasn't produced just right. I kept at it though just to see what would happen. I got to a point where I started to sound good, and that kinda gave me a little boost of confidence and pride. I thought "Boy! I sound good even on a possibly defective instrument! What a beast!"
Of course it wasn't as much the instrument as it was me. I didn't know how to control air, breath, finger holes, nada. After a while your brain will adjust to the instrument and you'll sound great. That kinda sounds confusing, I know, but consider your ability to walk. Watch a baby try to walk, and then watch yourself. Everything that you try to do, if you keep doing it enough you will become a master at it (I am a master goofball, for example). Your brain and subconscious mind are extremely powerful machines that are constantly working to bring you success in everything you do. So don't worry too much about how your journey starts, just keep a positive attitude and keep plugging away and you'll get the hang of it in no time