Kujund inglise keeles

I need to get a new device.
Pean hankima uue seadme.

I don't know how to use this device.
Ma ei tea, kuidas seda seadet kasutada.

Can you help me set up this device?
Kas saate aidata mul seda seadet seadistada?

The shape of the vase was round.
Vaasi kuju oli ümmargune.

The shape of the diamond was square.
Teemandi kuju oli ruudukujuline.

The shape of the paper was rectangle.
Paberi kuju oli ristkülik.

I have an image of a cat in my head.
Mul on peas kassi pilt.

I need to get this image out of my head.
Ma pean selle pildi peast välja saama.

I don't know what this image is supposed to mean.
Ma ei tea, mida see pilt peaks tähendama.