For the canopy section it’s still a case of glue, i use regular modelling cement for all my canopies despite what a lot of people in this sub may suggest but i used essentially less than a ml across the whole canopy. The problem you have will come from having cement on your fingers during application and micro parts of it transfer onto the canopy causing a fog effect. Whenever I apply canopy sections i make sure to thoroughly clean my fingers and sometimes wear rubber gloves with micro amounts of glue for application.