In a paint by number, each column and row has a list of numbers in order. Each number represents a set of contiguous colored-in squares in that row or column. Rows or columns that have more than one number must have at least one blank square between each set of colored-in sets of blocks.
In order to create a playlist on Sporcle, you need to verify the email address you used during registration. Go to your Sporcle Settings to finish the process.