Tree leaning so far it's almost horizontal

there’s no standard way of determining the coordinates of an observation in iNaturalist. unless you’re doing some sort of survey that requires this sort of precision, and you’re using tools that can reliably provide such precision, i would say that where exactly on the trees you get coordinates doesn’t really matter. if precision does matter to you, then you need to do it according to whatever set of rules you’re using. from a general iNaturalist observation perspective, the coordinates you got are fine, as they’re probably good enough for someone else to find the organism if they wanted to.