Ahmed,
Make use of the list of typical tasks at the rear of the Log Book.
Make an entry for at least one Task in each ATA Chapter and don't forget to tick off those you have done - so that you don't claim twice. Try not to put Pee-Clips or Ty-Wraps in it. Do 'proper' tasks like component changes and defects. Scheduled Maintenance Tasks are okay, but try to mix the content with Line work - If you can.
The aim is to demonstrate your all-round experience and training through a list of tasks completed and all to the satisfaction of your supervisors and QA staff.
NOTE:
You will also use this list for Type Rating experience records, so don't make a mess of it or use a photocopy of it each time you need it.
Hope This Helps
Rigga