Swaddle/Cover Up

How do you cover up your baby when they sleep?

My daughter is 2 1/2 months. She used to love to be swaddled the first month. The second month she hated her arms being down so I just folded the blanket down past her arm pits and tucked the blanket around. Her but now she’s moving her arms more and grabbing her blanket and covers her face and it scares me and I dont know how to cover her up anymore.