How can I increase my memorisation capacity or at least improve it?

physical exercise, meditation

Memorization can be improved by doing the following:

1. Eating the right amount and quality of food. Avoid skipping in between meals. Add B-complex vitamins in your diet.

2. Engage yourself in mental exercises like mind games, reading, answering puzzles. According to research, reading daily helps improve memory.

3. Interact with other people. Individuals who are highly sociable have better opportunities of recalling information and adding schemata.

4. Observe adequate sleep and rest.

5. Attend regular exercises. Exercises help improve circulation in the brain.  

its all about your lifestyle and how you interact with stuff around you.

1. Eat Right. 
2. Exercise. ...
3. Stop Multitasking. ...
4. Get a Good Night's Sleep. ...
5. Play Brain Games. ...
6. Master a New Skill. ...

EVERYTHING IS DEPENDS ON YOUR PRACTICE AND WAYS YOU ADAPT WHILE LEARNING ANYTHING. 

AND IT DEPENDS ON THE TYPE OF MATERIAL YOU WANT TO MEMORIZE e.g; IF YOU WANT TO LEARN SOME EQUATION OR ANY MATH PROBLEM, BEST WAY IS WRITTEN PRACTICE.

SAME APPLIES TO ANY KNOWLEDGE IN THE FORM PARAGRAPHS, YOU KNOW BETTER YOURSELF THAN ME, AND YOU KNOW HOW MUCH REVISION YOU NEED BEFORE ATTEMPTING ANY EXAM.

CREATE CODE WORDS, MNEMONICS, ANY SPECIFIC SENTENCE FOR THE MATERIAL YOU WANT TO MEMORIZE.

HOPE, I ANSWERED YOUR QUESTION.

THANKS

You can improve it by simply writing things, using reminder app etc.