A few tips I can give is keep your work experience relevant. If you have no aviation experience just list your current job.
Unless you have some serious qualifications like being a checker or trainer, your CV doesn't need to be more than one page long.
Make your total time and PIC time easy to find. The person reading your CV wont waste more than 15 seconds on it if he cant find the information he needs to see.
Only in Europe it seems does anyone care that you passed your theory exams first time or what your average exam mark was. First time passes in flight tests seem only to be a requirement of Ryan Air. This is because there are hundreds of guys to choose from all with exactly the same CV!
If you want to include a picture it won't hurt but make sure you are dressed properly and have shaved/done your hair or whatever else you do to look your best. No pilot bars!!!!