Most TPE dolls use M16 connectors, this allows many manufacturers heads to interchange, Jinsan (WM, OR and YL), Irontech, SM, SE, JY, 6YE all use M16 connectors, the fit on some of these is better than others.
Colour match between the brands and finding the different manufacturers terminology of colour shades can be challenging at times. There are various tricks to hide this mismatch, however I personally am not a fan of girls in tiny tight bikinis
with black chockers around their necks.
The head maybe crushed a little in transit, a picture would help.
Congrats btw.
Tommo