in sqlite update trigger with multiple if/Case Conditions

In Trigger how to get multiple Condition check like

'CREATE TRIGGER record_big_order AFTER INSERT ON orders BEGIN IF new.value > 1000000 THEN INSERT INTO big_orders (customer_name, salesman_id, value,Mark) VALUES (new.customer_name, new.salesman_id, new.value,'1') END IF; IF new.value > 2000000 THEN INSERT INTO big_orders (customer_name, salesman_id, value,Mark) VALUES (new.customer_name, new.salesman_id, new.value,'2') END IF; IF new.value > 3000000 THEN INSERT INTO big_orders (customer_name, salesman_id, value,Mark) VALUES (new.customer_name, new.salesman_id, new.value,'3') END IF; END; '