I don't think English has no tones. Like the word 'comprehension', it sounds [,kɔmpri'henʃən], the first syllable and the third one, they actually have tones. Actually, the first syllable's tone is exactly the same as the even tone in Chinese, and the third syllable's tone is the same as the falling tone in Chinese. That's what I found interesting between English and Chinese. Now I have no idea how to teach you the rising tone or the falling and rising tone in Chinese. Maybe I will find a way later. In China, when kids go to school, they need to learn the tones too. Generally they follow their teacher to pronounce the four tones many many times, so I think practise makes perfect. Don't be frustrated, things always seem difficult at the beginning, but you will do better later. Good luck to your Chinese learning. :-)