Changing careers, your resume has a harder job: convince a reader in one field that experience from another counts. Don't hide the change; explain it.
Lead with what carries over
Read five job posts in the field you want, and list the skills they keep asking for. Then find where you've already done them. A teacher moving into instructional design has planned courses, assessed learning and presented to groups every week; a retail manager moving into operations has run schedules, budgets and stock.
Put those results first in each job, written in the new field's words.
Say what you want in the summary
Secondary-school science teacher of eight years moving into instructional design. Designed a year-long curriculum now used across four schools, and built the department's online course in Moodle. Completing a certificate in learning design.
Close the gaps you can
Courses, certificates and small projects in the new field show commitment and give you something concrete to talk about. Add them in their own section near the top.
Trim the old field's jargon
Acronyms and titles that mean something in one industry mean nothing in another. Translate them.
Keep a version for each direction
If you're applying in both fields for a while, keep your main resume and a version for each. Each has its own link and theme.