So making a sticker is important. And more importantly, the sticker should be good.
But the automatic algorithm of picsart messes badly.

Let me show u.

To make sticker, go to sticker option 😅

Choose person.

Ur cutout is nearly made.

But the problem is that app makes it blurry.

Or in preview u wilk see better

Notice the small, unwanted border of image. For this, go to hardness of pen

Now put it to 100

And then fut the stroke above the area.

Now with eraser tool, wipe it out.

Before

After

Do his to the rest of outline.