Send the difference, not only the similar part
When a buyer sends a reference photo, the useful part is often what needs to change. Maybe the slide should be shorter. Maybe the color needs to match a resort. Maybe the site is wetter, narrower, or used by younger children.
Tell us what you like in the reference and what you cannot use. That makes the quotation cleaner. A supplier can copy a look quickly, but a project order needs the wrong parts removed before the drawing becomes final.
If your project has a consultant, installer, school owner or hotel operator involved, mention that at the start. The order may need clearer drawings, photos or document records for people who are not part of the first conversation.