How I limit my losses

Didn't see a lot of great setups for me, but I did like DCI and decided to enter. However, I didn't like how things were going and decided to start limiting my losses where it made sense to me. Click on the chart for more detail:
 

 
In hindsight, I should've just kept all my shares and exited at the same exact spot since my stop was never hit. In that case, I would've only lost .07R instead of .17. But, sometimes it's hard to make the perfect call in the middle of the trade.