Hi!
You have imported your data into the database. Which means the database is up and running. Which further means your control file fit and fine and you don't need to create another control file. What you can do is to backup your current control file using the command
ALTER DATABSE backup control file to TRACE;
Which creates a text file for creating a control file
OR you can use
ALTER DATABASE backup control fiel to <FILENAME>;
Which just duplicates your current control file to the name you specify.
Regards