Divide prepared decorating icing in half. Use half for decorating the house now, the other half for adding "snow" around house later (keep covered with a damp cloth).
Fill decorating bag with 1/2 cup icing.
Cut some gum drop candy rings in halves. Cut some mini sugared gum drops in half.
Outline door. Fill in with zigzags (pat smooth with finger dipped in cornstarch). Attach mini sugared gum drop halves on door edges and for door window with dots of icing. Attach mini multi-colored candy for doorknob.
Outline windows. Fill in with zigzags (pat smooth with finger dipped in cornstarch). Decorate windows with lattice. Decorate window sills with icicles. Attach gum drop candy ring quarters for to window sides with dots of icing. Attach a mini sugared gum drop half to top of window and mini multi-colored candies around it with dots of icing.
Attach a whole gum drop candy ring for wreath with dots of icing. Roll out a mini sugared gum drop and cut triangles for bow loops and a circle for knot. Attach to wreath with dots of icing.
Ice roof smooth. Decorate roof with scrolls. Attach mini multi-colored candies to scrolls. Attach whole mini sugared gum drops to roof peak. Attach a mini multi-colored candy to top of each gum drop with dot of icing. Decorate eaves with icicles.
Ice snow on base fluffy. Attach alternating mini sugared gum drop halves and mini multi-colored candies around house.