For some reason I got out the macro lens in early May and have rarely put it down! I took a few landscape shots since then, but mostly I've been playing in the macro landscape. My most recent setup has been using some flash brackets that I had laying around and mounting them to an l-bracket, then using the Godox 2XT trigger with the 350TTL. Very nice, light setup and it was all stuff I had already owned. About the only thing I want to change is attaching a different diffusion to the flash to get a more round appearance in reflections, etc. I'll likely rig something up with plastic milk jugs, rubber bands, and some ball bearings.
The 350 isn't a particularly powerful flash, but when I use the 100mm macro lens attached to the L-bracket, and especially when I use the 12mm extension tube with it, the flash can really be very close to the subject while it still appears to be "off-camera".
My favorite shots so far are in the f/8 to f/11 range as I still like a shallow depth of field, about 1/90 - 1/200 sec and ISO100 - ISO400. Flash is set to 1/1 to 1/4 power. On bright mornings this gives me the ability to still balance out the surrounding light, or squash it out. If I want more natural light, I raise the ISO and lower the shutter speed and decrease the flash, and balance the camera on the ground, my knees, a stick with hopes, deep breaths, whatever I got. Motion blur is a challenge when even a little breeze or bug movement happens. If I want a darker background, want to maximize the depth of field, or know I am going to want to crop heavily, I lower the ISO to 100, and raise the shutter speed to 1/200 and put it at f/11 - f/16 and raise the flash power. Below are some samples. So far, all my macro has been with the Sony a99 because I like the size, but may try with the Sony a6000 to get that APS-C crop.