I am working on how to make coffee

I  want to  learn how to make coffee someday. Considering i have a winter holiday now, i searched for a part-time job, which is working as a waitress in a coffee shop. If  it is  crowded, I will try to make some juice to help the drink maker. I know it's easy, but it's worth. Someday, i know that I will have a chance to make a cup of coffee.

I am not sure about your tenses here because I don't know if you mean "I will"or "I would" which is an imaginary situation... so it's hard to correct if I am not sure what you want to say.