You may have already have the mirror you need without buying a larger one. If it’s on the small side, try adding stacked frames on either side and accessorizing underneath. Stacked books are a great filler for any vignette that needs a little “oomph.
Headboard Project: Curtain panel, fabric markers of different thickness, write your favorite quotes/scriptures/poems/lyrics etc. on the panel. Hang from a curtain rod using clip rings---Combines my 2 favorite over the bed ideas! Words and curtains