My Comments:

Just start from the enduser point of view:

- What's in it for me?

- What can I take away immediately or within the next 90 days in terms of producing a creative outcome or construct a concrete deliverable that can eventually add/compound/multiply value to my life, or to my work, or to my business or to my client(s)?

You then work backwards to define your learning objectives, content tapestry, and delivery scope for the course.

Godspeed to you!