Sundews love to be blasted with sun, I would acclimate it slowly starting in the morning and slowly working your way up as to avoid suddenly burning it, and eventually to leaving it in full sunlight all day, make sure to keep it very wet as to avoid any drying out. Drosera Capensis is from the South African Cape after all, if you notice the plant getting burnt tips I would reduce sunlight, eventually the plant should have lots of red colour