This is one way you can transfer a small project of cut vinyl to whatever surface you want to put your vinyl onto.
Simply use blue painters tape from Walmart or any local hardware store, apply gently over top your vinyl cut out and transfer rubbing gently onto surface.
For larger products you can use “Magic Mesh” also available in the local hardware store. It comes in much larger sheets and REALLY works well.
Provo Craft does make transfer sheets as well and while they “work” I’m not as big of a fan.
Hope this helps, if you have any questions, please let me know.