I am a newbee also, have been doing BOM's for 4 years now. Last years BOM the last three had up to 132 pieces in a 14x14 block. I felt horrible a complete failure, I also have a friend who sews beautiful and that didn't help my confidence either.
But this year they are a lot less complicated and wow I feel like maybe I might make a quilt out of these. So just keep your chin up and remember each BOM you make is a quilting lesson.