Shew!
You've made it this far it does get easier! :o)
Now one
point to make here is this, because your sections are all on seperate
layers, if you have one that your not happy with, you can fix it now.

Then
when your satisfied with what you have so far, you need to hide the
backdrop layer, and the heart layer, and with a lace layer active,
merge all visible.
Save
Your Work!
Next
step is to duplicate this merged layer and go to Image / Mirror, you
may need to use the Mover to adjust the positioning of the left side
a bit so that the top seam meets up.

Bring
back you backdrop and heart layer to visible and we can add a finish
to the lace border.
Going
back to your 3 pleat piece this time we need to cut one full pleat
out of it to use.

After
you have it selected with your Selection tool Copy / Paste it to the
Heart window, select your deformation tool and position it at the
bottom of the heart and deform the top corners inward.

In position.......

Ready
to push Apply
Now when
satisfied, hide the backdrop layer and the Heart layer, and merge
all visible and Sharpen! :o)
You might
also like to tube this lace frame to try on something else later on!
Save
Your Work!
Very
good!!! The rest is a piece of cake lol
Grab
yourself something to drink and stretch your legs then we'll be set
to embellish and complete your Valentine!