As someone who has been leading photo workshops for 10+ years, I’m happy to pass on a few things for you to consider.
(1) Do you want/intend to offer photo Workshops or photo Tours? Workshops include instruction, whereas for Tours, the main consideration is your in-depth knowledge of the location - just get your clients to the best spots at the best time of day, in the best time of year.
(2) Even if you specify Tour, you will undoubtedly be asked for instruction - both composition and camera handling.
(3) If you are leading tours/workshops on public lands, you will likely need a Commercial Use Authorization (CUA) permit from any federal, state, or local land management agency. Getting these can be time-consuming and costly; operating without one runs the risk of having your workshop shut down by a ranger or other authority at any time during your trip.
(4) Permit or not, you need to protect yourself with a liability insurance policy. Many state and federal agencies require a $1-2million policy, naming that agency.
(5) Some permits require the leader to have basic First Aid and CPR certificates, if not Wilderness First Air or Wilderness First Responder. Good idea to have that knowledge even if you don’t need it for a CUA.
(6) Clients on my workshops have repeatedly mentioned going on other workshops where the leader was more interested in making his own photos than helping their clients. Don’t be that guy. By all means, make photos yourself on the workshop/tour, but while doing so, make it an instructional opportunity, pointing out all your steps for composition, camera settings, pre-visualizing the final image, etc.
(7) Your clients will expect you to be an expert in advanced processing with Lightroom Classic, Photoshop, and perhaps other apps. HDR, panoramas, Focus Stacking, sharpening, blending layers, etc.
(8) Very likely you will be asked to help with settings and controls on all the major camera brands and models. This has been a challenge for me, just trying to learn basic things like showing clients how to bring up a histogram on their many variations of DSLR and mirrorless cameras for Canon, Nikon, Fuji, Sony, Olympus, Pentax, Hasselblad, and Leica.
(9) Along with the Nature First and Leave No Trace principles, It’s really important to know, and be able to share, the natural and cultural history of your locations. Be knowledgeable about the ecology, geography, geology, ecosystems, wildlife, and indigenous peoples.
(10) Most importantly, a photo workshop/tour leader needs to be passionate about sharing their knowledge of both the location and how to create images that clients can be proud of and share.
I was very fortunate to discover in my first workshops how much I loved both helping people improve their photo skills and showing them the wonders of the locations we visited.
Good luck with your endeavors!