Do you have any ideas to tell me how to improve my math result?

Self-confidence is necessary if you want to improve your math.
But to achieve your goal you need not only confidence, but also plenty exercises and certain skills.

是翻译吗?
你对如何提高我的数学成绩有主意了吗?
如果是问如何提高...多总结,多做题,上课一定要好好听课

do more exercises
that's all!

对于怎样提高我的数学成绩你有什么办法要告诉我吗？
相信你自己，你能够解决我的问题的。