Colorful Social Ad for Excel Training

I need a single 16:9 social-media graphic that promotes my live, instructor-led computer-training courses in Excel, Power Query and Power BI. The image has to be colorful and vibrant yet still project trust and reliability.

The artwork must show, at a glance, that participants get:
• a full-day (7-hour) class,
• a tiny group of just 2–3 learners,
• global access from home or office,
• exercise files, summary notes and a completion certificate,
• suitability for youth, seniors and busy executives.

Key requirements
• Include the official Excel logo and my OfficeInstructor logo (I’ll supply files).
• Feature a clear email call-to-action so viewers know how to register.
• Use realistic, engaging imagery—no washed-out or cartoonish figures.
• Final size: horizontal 16:9 (minimum 1920 × 1080).

Deliverables
1. A high-resolution PNG/JPG ready for posting.
2. The editable source file (PSD, AI or Figma).

I’m open on the exact color palette if it supports the vibrant yet trustworthy look. My budget is CAD $25, so please attach or link a quick concept/mock-up—watermarked is fine—so I can see your approach before awarding the project.