Don't be nervous. I know that is easy to say, but let me tell you a funny. I attended a quilting school where the teacher started a new project every other month. One month we all were having a problem putting the project,a table runner together, even the teacher. It turned out the measurements for the center square were wrong. I drafted the center and sewed it together. Perfectly. The teacher? She had problems with the table runner because some of triangles were backwards. She had to re-make them. That evening we each learned from each other. You are going to do great!