Absolutely! Everyone feels slightly awkward coming into a new space and trying new things--even students who have been practicing yoga for years. IWY prides ourselves on being able to teach anything to anyone, no matter what their level. It's our job to show you how yoga works.
Our classes are designed for all levels. That said, you should be prepared to make modifications as suggested by your teacher, to take rests when necessary, and to go at your own pace. Yoga is a practice that you must develop over time; it is not a competition to see who can execute the fanciest pose. If you honor your body and accept your limitations you will do just fine!
If you are brand new to yoga, please let your teacher know so we can offer some additional information to help you in your practice. Also, don't hesitate to ask questions after class.