Of course it's natural that your imagination can produce material that is false. Your imagination can pretend and make things up just as well as it can produce real information. I have a suggestion that might help you learn to distinguish or get more of the results you want.
When you're doing this kind of practice be excited for any kind of perception even if it you think it's the made-up stuff. At least you're in the right place. Your next step would be to keep focusing your attention on your target. There isn't a right or wrong answer for what your perception of your goal should be like. As long as you can keep your intention in mind that's all you need. Then allow it to come into focus for you. There will likely be some extra stuff perceived that isn't necessary but that's normal for anyone.
One way to try to ignore worrying whether something is real, important, or extra junk is to just remind yourself of your intention or goal. You could restate your question or your intention, or ask something like "Is this something that will lead me to _________?"
I do that when I want to make sure I'm on the right track, because sometimes what we imagine perceiving (whether it's real stuff or pretend) can side-track our attention and then we don't know if we're on the right track or on a wild goose chase. So keep your mental focus on your true goal or intention and you really won't get steered wrong.
Then, just go with the flow and accept it as true that
whatever you are perceiving is indeed in direct response to your question or intention. All you really need is the
feeling of your intention. As long as you can feel your intention, everything else will fall into place. Feeling is more important than wording or stating or even asking.
That's the best way to practice. If you have that guideline to follow, and you follow it, it will guide you into clearer perception and discernment, I'm certain.
Anyway, you definitely are doing well and have a great grasp and knack for it. As Wade said, good luck and keep us posted!