I find that new Reiki practitioners often benefit from regular practice of Reiki. In doing so, they gain confidence and learn to relax during the process. With more experience, they will also gain the ability to handle stronger or more multiple frequencies of Reiki healing energies.
Unfortunately, it is often difficult to find volunteers or clients at the onset of training. Therefore, I highly recommend joining volunteer Reiki organizations such as the Distant Healing Network. Such organizations will allow you to undertake Reiki sessions on a regular basis while gaining a sense of being part of the Reiki community. Please be aware that some volunteer Reiki groups insist that volunteers have completed the second level of any Reiki course. In these cases, much of the volunteer work is conducted distantly.
Distant Healing Network
For even more great posts about Reiki, you may want to check out What is Reiki?, Reiki Basics, Reiki Healing, The Nature of Reiki Energies, and Reiki Best Practices. You can also get a Free Visionary Reiki Session.