1. Contructive criticism "You could improve it by doing this, this and this"
2. Destructive criticism "your texturing sucks"
Had you worded your criticism as 1, then I doubt he would have responded as such.:)
Nice model anyway. I agree with Korolia though, I think the texture needs a bit of work. That saiud Im not a modeler, texturer or any such thing, so maybe an expert such as Korolia could offer some advice on how to sort that problem out.