Need a background to create a map?  it is a map for you it is an ordinary pure world or more precisely emptiness. On the map there is only one block of Bedrock which is on coordinates 0 70 0 on which you also will appear when you come on a map. You can make the card for example a skyblock, one block, or  others. Good luck I hope you get a good map. Sorry for the incorrect translation of some words I do not know English well I use Google Translate.