Hey, so basically they revampled the whole skill system, some people dont know it. The focus points doesnt give you more skills, its basically just a modifier. In order to increase those skills, you need to practice those skills. So basically, hover your mouse over a skill, and it will say what you need to do in order to improve it. So for example, in order to improve steward skill, you need to build your castle and improve it, etc. In order to improve leadership, you need to lead kingdom armies etc.
Keep in mind doesnt matter if you kill 1000 enemies, it wont do anything to improve many of your skills, you need to do specific parts in order to raise them.