To use, This are for windows, please modify for mac
Open your photo you want to add the overlay too.
Go to file- Place Embed and add the over lay and size, rotate as needed (Control T) - hit enter
Use edit- transform- warp or edit- puppet warp to adjust the wreath to fit.
Make the overlay a mask to mask out any parts not needed.
I like to use blending options for the mask to add a very light drop shadow to add dimension.
No pose will completely fix the wreaths and you may need to add pieces by cloning or delete some with masking.