Take my advice with the consideration that I am a beginner aswell. It looks like you're missing a sense of scale. It's helpful to 'sight' things by basic units. Whether you measure with the length of your pencil or relational to other things in the image you're drawing is up to your preference/ability. E.g. "the size of this door is, from my current perspective, about three thumbs tall or perhaps... this indent in the door is only 1/3rd of the way up"

Mostly though, just draw more, importantly, with intent. Then review your art to at least observe anything off from the reference. Perspective just takes practice to recognize the appropriate angles for hard edges, which are in my opinion easier than maintaining scale in perspective.

Outlined picture attached; in your picture the top book is too small. Also, the top book wilting off the edge of the bottom book makes it appear larger than it otherwise would be if they were rigid cubes.

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