Good job on the perspective
I have one comment: the biggest obstacle in drawing realistically is freewheeling on your imagination and not carefully observing the reality. You applied the same vanishing point for the top of the clock and the wall. But look at the reference, and indeed at the way you drew the bottom (blue line), the clock is not oriented parallel with the tiles. So, it must have a different vanishing point, in this case more to the right.
These classes have some structure, shading is in class 8. There is a reason, start your journey concentrating on the correct forms and proportions
. Look how you drew the glass bigger than on the reference. And the top of the clock is completely off in proportion.
Keep up the good work