Query - Total de vendas semana passada e retrasada

CREATE TABLE pedido (
 id INT,
 created DATETIME DEFAULT NULL
 );

INSERT INTO pedido (id,created) VALUES(3,'2015-05-21');
INSERT INTO pedido (id,created) VALUES(4,'2015-05-23');
INSERT INTO pedido (id,created) VALUES(5,'2015-05-24');
INSERT INTO pedido (id,created) VALUES(6,'2015-05-24');
INSERT INTO pedido (id,created) VALUES(7,'2015-05-25');
INSERT INTO pedido (id,created) VALUES(8,'2015-05-26');
INSERT INTO pedido (id,created) VALUES(9,'2015-05-27');
INSERT INTO pedido (id,created) VALUES(10,'2015-05-28');
INSERT INTO pedido (id,created) VALUES(11,'2015-05-29');
INSERT INTO pedido (id,created) VALUES(12,'2015-05-30');
INSERT INTO pedido (id,created) VALUES(13,'2015-06-01');

SELECT --datepart(WEEK, created),
 Count(id)

FROM pedido WHERE created BETWEEN DATEADD(WEEK, -3, GETDATE()) and DATEADD(WEEK, -2, GETDATE()) GROUP BY datepart(weekday, created) Essa query não está certa.

Eu preciso fazer uma query que mostre o total de vendas da semana passada e da semana retrasada, como eu faria ?