$items  =   [
                [
                    'category'  => $catID,
                    'item'      => $itemID,
                    'colors'    => [
                                    '#FFF',
                                    '#F0A',
                                    '#F0B'
                                ],
                    'canvas'    => [
                                    'front'     => $frontCanvasData,
                                    'back'      => $backCanvasData
                                ],
                    'price'     => $price,

                ],

                [
                    'category'  => $catID,
                    'item'      => $itemID,
                    'colors'    => [
                                    '#FFF',
                                    '#F0A',
                                    '#F0B'
                                ],
                    'canvas'    => [
                                    'front'     => $frontCanvasData,
                                    'back'      => $backCanvasData
                                ],
                    'images'    => [
                                    'front'     => $frontImage,
                                    'back'      => $backImage
                                ],
                    'price'     => $price,

                ]
            ];