Insulate your slab, many skip this part.
I've built quite a few (general contractor...that wishes he was a knife maker).
Consider attice/room trusses. Consider an energy heel on your truss.
Consider using SIP panels for your walls. (osb inside and out with expanded polystyrene on the inside) They are very easy to build with and very efficient.
A nice trowel finish on your slab is all you want, don't burn it off too much. Over polished concrete looks good, but it's too slippery for a shop.
Get your grade set right, as mentioned, you do not want water problems.
Consider doing soil tests.
Don't skimp on rebar.
If you plan on keeping it cool/warm, don't skimp on insulation.
Take the time to seal between studs that contact each other. (Trimmers/kings. Headers. Corners.)
I always seal the bottom plate to the slab. I use sill seal, but then caulk the bottom plate to slab on the inside of the building. ( I use do-all-ply, not silicone)
Make sure you vent your attic correctly.
Wall height is a big consideration. With 10 ft doors you'll want 12 ft walls. This means your heating and cooling more cubic feet of air, which cost money every month.
Install reversible ceiling fans, depending on what's going on, you can control your climate better. They aren't expensive.
Put outlets and lights everywhere!!!! Lights aren't really that cheap, but outlets don't cost much. I hate extension cords in my shop. If they're there, you'll use them.
If you don't use plywood or osb/ SIP panels on the interior, make sure you install backer blocks wherever you think you might want them. Again, this just requires thinking, it's not expensive at all. I wouldn't even charge for this unless it was really extensive.
In climate controlled areas with poor air quality, that require extra venting, we typically use air to air heat exchangers to avoid exhausting all that warm air you paid to heat up.
I've enjoyed your youtube videos, thanks for sharing your info.
Good luck with your build.