@Engin B., you need to leave no more than 2-3 pixels beneath the chin, nudging the collar up if necessary.

You also need to make sure your cuts have a lot less snow. Putting them through remove.bg will help.

Thanks for these tips. I'm also using remove.bg but most photo sources are low-quality and having loud graphic backgrounds.

I appreciate that, but leftover snow is not generally due to the quality or otherwise of the source image, but of the technique(s) used by the cutter…

Do you mind if i ask that how i completely remove that snowing on cuts?

First of all, by making sure you familiarise yourself with the tutorials and guidelines for cuts.

Secondly, if you use remove.bg, you should not get that amount and kind of snow on your cuts. On the off-chance that you do, putting it again through remove.bg should remove it; which is what I did in fact.

You can also clean it using the technique outlined in this video: