Hello asparicant,

Well gaining good percentage and cgpa is depends on how much you passionate about that particular branch. Alongside passion you have to practice the things to get good marks. Following are the few tips which can help you to get good marks.

1. Make a convient time table : I am not saying that you should do study all the time. But make a schedule and keep at least 5 to 6 hours in a day for study and make a habit to give at least 5 to 6 hours in a day.

2. Analyse yourself : Analyse your subjects. Analyse in which subjects you are good and in which submit you are weak. Give more time to the subjects in which you are weak.

3. Practice a lot : Learning a thing is never be impactful until and unless we practiced. You spend more time on practicing the thing. Practice makes a man perfect. 

4. Questions papers : Analyse question papers Analyse which type of questions are asked in exams and prepare according to that.

Hope you satisfied with my tips.