How do I make a level editor?

I've been trying to make a level editor and have watched some tutorials but none use sprites instead of tile maps.

You'll want to save the x, y, and angle of each sprite object presumably.

Make an array for each object.

For each instance of the object, push x, y and angle into the array.

Save the entire array asJSON to localstorage

When loading, loop through the array and create an instance of the object for each entry in the array, positioning them according to the saved data.

A level editor by Alexei Bootreen (re-upload): dropbox.com/s/8kxinh9tcn5qa3a/sample-editor.capx

Thank you this should help