Yes, you can put on pearls around the edges... measure your first side and cut two lengths.. Put a good wet glue (with extra tacky adhesion) on the sides of the card and lay the pearl string on to it.... leave to dry..
Then measure across the top allowing an extra inch (cos it curves and rather too big as too small) Then putting your glue on the card lay the pearls onto the glue.. cut off any excess when dry
I use this method all the time and it works for me..
hugs
Ida xx