Anna a few tips that I find make it easier to redesign....
1. Though time consuming store everything in your inventory.
2. Using roads divide your land into 4 squares, than in each of those four squares make an additional 4 squares... So you will have 16 squares to build from.
3. Group buildings that you like to see together....Christmas Area, Halloween Area, Food Area, Houses... Etc... Place them in the square or squares you would like to see them in and continue to develop with corresponding buildings and possibly more roads.
4. Don't put out any decoration for atleast a week or until Easter and or Whacking day is over. New buildings mean you would have to redesign again, so hold off until you get everything you want or need. And even then still don't add any decorations until you 100% love your design...
I redesigned mine about 3 days ago and still haven't laid out any decorations, I tweak a few buildings every so often.