Don’t be afraid to use whatever Chinese you have learned so far, if you mispronounce a word don’t worry about it. Tell your Chinese-speaking friends to correct you if you frequently get a word wrong.
One of the most important things to remember is that if you can’t explain something using Chinese that would be easy in your own language, then simplify the Chinese you are using – don’t try and directly translate a sentence or word just for the sake of using that specific word, use what you know.
If you frequently find yourself trying to translate complex sentences from English to Chinese when it’s just not necessary. Stop for a second and think about what the fundamental thing is you are trying to say, then use the Chinese you already know to say it. There’s nothing wrong with this and it’ll only reinforce what you have learned already.
What sentences or words have you found difficult to translate into Chinese?