Professional Grooming
Some groomers have never groomed a Labradoodle! Even if they have, they may not have seen one like yours. If you have a picture of the look you like, you should take it with you to the groomer.
DIY Grooming
General Body
Area Brush. Trim with scissors to desired length
Wash and Dry
Wash with shampoo and spray with a detangler, if necessary.
Do not brush again. Air dry or dry without brushing, using fingers to scrunch coat as you go. This keeps hair corded not fuzzy.