What should someone who has worked in wedding photography and wishes to repent do?

Photographing weddings is forbidden if it includes a Sharia-prohibited act, such as looking at women's 'awrat (private parts), or publishing their pictures to those who are not allowed to see them, or photographing reprehensible acts like immodest display and unlawful mixing (of genders). However, if the photography is free from these prohibitions, it is permissible based on the permissibility of photographic imaging. Repentance is achieved by regretting the sin, immediately ceasing it, and resolving not to return to it.