3D character

So, this is my first ever humanoid 3D character, made from scratch in Blender, textured in Photoshop and in Blender with shaders. Frog-alike creature is stolen from CGtrader https://www.cgtrader.com/free-3d-models/character/fantasy/cute-green-monster-of-clay
I need to admit, crotch in pose seemed weird, so I faked my lack of knowledge by post-processing, actually I have no clue how to make crotch behave anatomically correctly after posing, so any piece of advice very welcome (please, this crotch thing is really bothering me)...