i think a foreign is good for learning another foreign.Because you have two different ways to think things,and youll learn faster than the first one.luck with you!

Danke!

Mixing two languages which first sound sometimes the same to you is totally normal to beginners. Just give it some time and it will disappear by itself. Just try to learn more german instead of english and you will understand german much better and do not mix it that often anymore with english. Of course you first mix the languages but thats a problem of the mind. See if you do not know the word in german altough you want to speak it your mind tries to find the word in another language. Because your soul tells the mind to do not use chinese your mind will use the english word to replace the missing german word. As I said thats normal for beginners don´t worry. After you learned the word in both languages your mind always know what does it mean in which language and then you do not mix it anymore.