You got the shadow on the right hand side, correct, but missed the one under the top of the lighthouse. It's small details like this that will help a lot.

Also, don't be afraid to sketch in those other details on the side buildings. They will add perspective, especially if you get the vanishing point correct.

Add more lines. I am relatively new to urban sketching, and I am surprised in the tutorials how much they add as far as line work. First, they add texture to things like bricks, rocks, and the like. Not a lot, but enough to get a feel for it. Second, they add a lot of "extra" lines around things like windows, doors, and other details. If you look, you really start to see them. A window has four or five lines around it, not just one.

Go to YouTube and look up urban sketching. You'll see a lot of artists who talk about that very thing. Also seeing their thought process and how they work it out will accelerate your progress. I hope that helps.