[Deseassaugs]

As Rottenpunk said... start out slow. It is important when doing kirikaeshi (as with all kendo) that you perform each strike correctly. To do this, especially as a beginner, means you need to take your time. As I tell beginners when I am helping to instruct 'if you learn proper technique from the start you can always speed it up later, if you start with poor technique no matter how fast you are you still have poor technique'.