Stripping off the leave with sharp sissors will help the tree grow an increasing number of leaves. The new leaves that grow will be much smaller and brighter in color. As the leaves grow in you may want to take off any that grow too large in order to keep scale.
Once all the leaves have been removed it is a good time to look at the overall shape and make some of the adjustments to its look. This tree has an uneven distribution of branches and needs to be changes.
Watch for my tips on How to Wire Your First Bonsai Tree