About 20 years ago, I had a lady come and paint Purple grapes and green leaves on vines in my kitchen.  The walls are sheetrock.  I want to update and paint over the grapes and leaves.  She painted with flat acrylic paint.  Please tell me what to do to cover

If, for example, I prime and paint a room, use good paint and tools, do a great job…then 5 years later want the room painted again…Do i need to prime the walls again?

Do u need to repair hairline cracks before doing tissue wall paint technique?

Some suggest doing a prime and then paint. Others suggest using a prime/paint combination.

Masonite interior door painted with latex paint is peeling. How to repaint? Looks like no prep prior to painting door surface is still glossy.