Create Project in Information Design Tool
Then you can create the Information Space in BusinessObjects Explorer.
At this time you cannot connect SAP Lumira to a BI4.1 Universe.
I learned how to do this by attending the BI4.1 Hands-on Workshop at ASUG Annual Conference.
Consider attending ALL DAY | HANDS-ON: SAP BusinessObjects BI 4.1 with SAP BW and SAP ERP – Everything You Need in One Day on October 21st at SAP TechEd Las Vegas, sponsored by ASUG.