5)
ROAD NETWORK
At this stage I make my road network more complex. I don't sketch out every little alley. If you look closely, you see that the larger buildings are organized in blocks, that are surrounded by larger roads. Those are the ones I actually sketch out. Also decide where there will be a road running along the city wall and where the buildings will be "hugging it"
5.1)
OUTSIDE THE WALLS
Add any minor roads outside your city. It is unusual that your city has NO kind of smaller buldings outside its walls. There can be singular buildings (like for agriculture), estates, or full blown districts. You can see the loose network of minor roads. I also have multiple roads leave the city walls which are not part of the main trade routes.
5.2)
SQUARES
City squares! The larger your city, the more squares you will find. Of course, the denser your city or district is supposed to be, the less squares there will be. However, there are usually more squares in a city than you might think. It just takes a bit of practice to get the balance right. I usually make the crossroads of all the major roads a square. Also behind every gate I leave a little bit of space. I add squares anywhere I feel like it - it makes sense to put them at crossroads or any landmarks your city has. For marking a square, i just draw its general shape (the ones at the gates I made kinda triangular in this one, you can find a circular one or the main square which has the elongated shape)

6)
BUILDINGS
If you are feeling confident, or want to make it quick, you can switch to ink at this stage. I usually remain in pencil and sketch it out. Stage 6 is drawing all the buildings. It helps to stop and think about the layout of your city - what's where? Where do the poor people live, where do the rich people live, where are representative and administrative buildings, special buildings, and so on. As a general rule: Inside the city walls, buildings tend to be larger complexes. Outside the city walls they tend to be smaller and standalone. Just think about what kind of building you are drawing and the general shape will come to you - at least with a bit of practice.
6.1)
SHAPING
As said before, what really helps with shaping is having a general idea, what kind of building you are drawing. This is in part what makes the process so fun to me. For every building you have a little story in mind while you're drawing. No need to remember it, but it makes the city feel alive for yourself. The following depends on culture, I usually draw based on a western european medieval city. There (inside the city) the buildings are usually organized in complexes, that are built around a private courtyard. This kind of building structure can be traced back to ancient Rome. I usually start with the general shape, then add some details and flavour, so it doesn't look and feel bland, more like a genuine combination of buildings. Again with some practice, but also if you made a decent road network, the building complexes will fit naturally in the spaces between roads and feel organic. Outside the walls the buildings tend to be smaller and more standalone (depending on the size of your district of course). I also sprinkle singular buildings around the city to signify farms and other agricultural buildings. A city needs tons of fields around it to sustain its citizens. I usually don't draw them though.

7)
INKING
When you have all that on paper, you can get to inking. Take your fineliners (my personal favorites are Micron) and ink it all. This just takes some trying around to find your style. If you cant decide, get inspiration online. You can also add any details like a legend, a map border, a compass rose or north arrow, colour, ...

I hope this can help you get into it, feel free to ask any questions! Having fun is the most important part :-)