G'day H, 1st coat looked good and yes, maybe laid down a bit too thick but still OK as what you have there looks pretty similar in terms of what I experienced.
If it ends up looking 'Green' again, just leave it alone for a couple of days to harden and then knock it back with a bit of sanding. Once this 1st one has cured, see how many undulations you have before getting too carried away with the sand paper. This is weird stuff to use for filling some of the dips and you will be blown away by how subsequent coats may react to the one previously laid. It was only after doing about 10 or more touch ups that I began to start figuring how this stuff reacts with itself, mostly unpredictable, so lots of patience was required.
Recommend a similar thick 2nd coat, starting at the nut and gradually using an old credit card to smooth the watery liquid along as you go, remembering it is being used as a tool to spread the liquid, nothing else, and most importantly try not to go back over what you have already done as the thinnest layers may have already started to cure.
Very toxic stuff and the fumes it gives off made my eyes water too, even with glasses on. Understand why you went outside but if you end up with a watery finish again the job really needs to be left alone for a period of time for things to start to 'Set' and that's where floating airborne objects can become a problem. Did mine in the Garage with door up about 150mm and basically held my breath whilst directly above the job.