I don't know if my visualizations are always quite what the author intended, but they always look like people. In conclusion, you are probably very strange. Don't fret, deep inside you knew this already.

As a side note, in my very slow re-write of my Jennica's Story book, I purposefully avoid giving any sort of physical description of my main character besides "female" and "young". This lets her look any way the reader wants, and also plays into the story's notion that she might not be real. I'm not sure how readers adjust to descriptionless characters. I suspect they fill in the blanks on their own, often without even realizing it.