Having a little issue with resizing item

So i have been looking on how to resize a item and found this code to put it the item json file but i am having a little trouble putting the item in the right location by rotating and translating. Does anyone know how to resize a item if so it would be much appreciated! I have seen nothing about this topic and it might help a lot of other people too!

https://gyazo.com/201350ef4f6ad9329fcfe9c3ec8d93da

https://gyazo.com/27a9d5c28bdcf6833a75c6abf855a639

code:
,

"display": {

"ground": {

"rotation": [ 0, 0, 0 ],

"translation": [ 0, 3, 0],

"scale":[ 1, 1, 1 ]

},

"fixed": {

"rotation": [ 0, 0, 0 ],

"translation": [ 0, 0, 0],

"scale":[ 1, 1, 1 ]

},

"thirdperson_righthand": {

"rotation": [ 0, 90, 40 ],

"translation": [ 0, 15, 2 ],

"scale": [ 2.0, 2.0, 2.0 ]

},

"firstperson_righthand": {

"rotation": [ 0, 90, 40 ],

"translation": [ 0, 15, 2 ],

"scale": [ 2.0, 2.0, 2.0 ]

},

"firstperson_lefthand": {

"rotation": [ 0, 90, 40 ],

"translation": [ 0, 15, 2 ],

"scale": [ 2.0, 2.0, 2.0 ]

}

}