Air carrier Line Maintenance reported completing a HAZMAT shipment with the wrong labels and was retrained on the correct process.

Narrative

I walked in to work at XC:00 to a HAZMAT shipment waiting to be sent and to have the second sign-off that was left for me from the night shift that left at XA:00. While going down the checklist now I know this error that I made which was: There was no shipping name only the signature and the incorrect Class 9 because I mistook it with the other Class 9 label but I completely understand the difference between both now; I was retrained on to check the different classes of label and also go through the checklist and on the package itself. Also; the labels weren't all put on one side of the box but I now know to verify and triple-check that all the labels are in one side and not overlapping. Now going forward I will triple-check the package and the paper out that goes with it. Also; I got retrained which truly did help for a refresher.Completed a HAZMAT shipment with labels placed incorrectly with the wrong Class 9 HAZMAT label. As a corrective action I have reviewed the HAZMAT shipment procedures alongside a Supervisor on where the errors were made. In the future I will double-check references to ensure I am using the correct Class 9 HAZMAT label.