Feeling faint while watching an IV placed in my arm

Started live IV’s in lab today for my paramedic program and while I have no issue placing IV’s on others(success rate is another thing but not something I’ll get into here) when I have IV’s placed in my arm seeing the flash and aspiration causes me to feel faint. I don’t want to have to sit out of practicing live IV’s bc I can’t have them placed in me without fear of fainting so I’m wondering if anyone else experienced this or had a similar issue. I’ve considered looking away during it but want the extra practice of seeing how others do it so I’d like to be able to watch it happen if possible. Thanks.