The general process of making a hand-drawn map is: enter the background image → key hand-drawn points → complete the work!
In fact, there are still many things that need to be paid attention to, such as: How to collect information?
What tools should be used?
Collecting information is a big difficulty. In addition to the necessary photos, you also need background image references, as well as various logos, names, introductions, etc.
In addition to taking photos of scenic spots in person, you can also collect them online. There are many photos that are better than those taken by yourself.
Base maps generally use satellite images as reference, such as sky maps and so on. However, such maps cannot be downloaded directly, only screenshots are available.
For production tools, in addition to hardware configuration, mobile software is also required.
The ones on the computer include: PS, 3D Map Generator software, SAI, Vue, Excel, Blender, Unity3D, World Machine, etc. With so many software, it is obvious that not everyone can master them, so I am committed to one or two mobile software and steadily
Development is the right path.
It seems very troublesome, but in fact you can definitely do it if you do more research!
If you want a more professional team to help you, I think Zhimei Chuanghua is more in line with your requirements. I hope my answer will be helpful to you.