Greetings bamb(o0)cha, welcome to the community. Hope you enjoy your stay.
If i'm reading you correctly, you want to create a kind of tattoo effect. No problem. [righton]
Simply import your 'tattoo' image into your photo image. Put the tattoo image on a layer above the photo, then set the tattoo layer's Blend Mode to one of these that suits you best: Multiply / Overlay / Soft Light.
You may also want to play with the Opacity of the tattoo layer to get a slight bit different look to the effect.
And in case you don't know this...
If you need to remove the tattoo image from the eyes/lips of the person, just add a Layer Mask to the tattoo layer and using a medium sized soft brush, paint with black over the eyes/lips. Be sure you're painting on the Layer Mask though, not the tattoo layer itself.
Hope that helped. If not, feel free to ask questions.