Mr Rabbit

Hi, can anyone help me, I'm very new to this platform and just starting out as a screen printer! At the moment I'm working with stencils but my next step is to print using an image/design on a film positive and burning the image onto my mesh screen. Is there anyway I can use either Affinity designer or/and A'photo Beta to prepare my work? If I was to do a one colour print I would need to turn my image or design opaque to then transfer onto my film positive? Also would I be abl...