Hello, I know your problem, I study Chinese for more than a year and half, I am able to understand the different sounds that you are facing in this moment, even if you try to sing or imitate the conversations of different movies, there is still hard to pronounce as a native, Right? The position of the tongue is not always so easy. I could help you with the sounds and to pronounce better. Feel free to speak with me, if you still are studying Spanish (I have seen that you wrote this 3 years ago)
Have a great day!
Sonia