Regarding texel-density I guess there are two ways of doing it, so if you´re making something for a game and you know EXACTLY from what distance your model will be viewed 100% of the time then you can have different texel density for different areas. but if you cant know for sure how your object will be used or from what…
General guidelines: -When you separate shells that share a hard edge like that, you should only offset one of the other shells slightly, then treat that pair as "one" shell. -Don´t place shells which belong like that, at two different places on the UV map. -Stacking of shells is generally a bad idea unless you are…