Making tattoos - stretched results

[arisaie]

I wanted to create a simple tattoo that's between the clavicle and elbow. 

I got thestandard  UV layout from a website.

So I wanted to use this layout (imagine small circles going around the upper arm creating this sort of tattoo.

Im using affinity photo and copy pasted the  circles around the places where they (think) should be.

Well, there's this stretching goin on. Some circles are stretched, some are not.

The hands on the UV are not leveled , so I am also having a difficult time matching between the seams.

 

Also tried substance painter, but doing it with painter creates black edges even with no padding or dilation.

 

Anyone can point me in the right direction?

Thank you!