Yes. Make sure to let the buttercream dry off so the lace color won't bleed and the moisture won't melt the sugar lace.Then apply a light coat of piping gel or edible glue on the buttercream. Place the lace to the buttercream. You have a 2 to 3 minutes window where you can move and reposition the lace. After that, you risk tearing or stretching the lace.