Doing an eye and wig swap on Wellie Wisher Ashlyn.
You need a cup of water at 200 degrees. This will soften the vinyl and you'll be able to pop the eyes out easily, and pop the new eyes back in.
Get a plastic bag with no holes and tick the head inside the bag. Stick the doll head in the water for 2-3 minutes.
Check to see if the vinyl is soft enough to squeeze the head small enough to pop out the eyes. If not you will need to soak the head in the warmed water a little more.
Here she is with decal eyeliner. Her name is Maria!