Here are some helpful tools for you to prepare your CV and cover letter.
CVs:
Curriculum Vitae Europass Tools
CV examples (Europass)
--> Please feel welcome to use this Europass template to write your CV and save it to your computer so you can use it when you are looking for a job for real later.
You can also use any other template you consider appropriate, but be careful: each country has different rules, which you can easily find out more about on the Internet.
In Germany, e.g., CVs are a maximum of 2 pages, they should contain a professional portrait picture and list your experience in reverse-chronological order. Here are some more tips:
How to write a CV for the German job market
Spain has very similar rules for a CV: CV for the Spanish job market
Universal rule, no matter what country: make sure your CV contains no typos :-)...
Cover letters
How to write a cover letter for Germany
International cover letters for all kinds of jobs (tips and samples)
You can also use any material you might have already come across in your English lessons at school.
You should, however, make sure that your layout looks good and that the letter contains no formal errors.