Changing build rotation

Hi guys, I am new to Unity and programmiing in general. My question is that i have written this script that builds a shape, in this case a pyramid, in a spiral motion. It all works well except, that i can't seem to turn the gameobject(brick) in the building direction the shape is going i've tried several things like changing it's lookrotation, fromtorotation, eulerangles.y but can't seem to get it to turn the right way. Any help would be appreciated. (If my code looks sloppy, i'm still learning) :)

public class PyramidBuilder : MonoBehaviour {

 public int layer = 10;
 public int cols = 10;
 public int rows = 10;

 float  shiftBrickX = 0;
 float  shiftBrickY = 0;
 float  shiftBrickZ = 0;
 //Quaternion brickRotation = Quaternion.identity;

 // The gameobject of which the shape is made
 public GameObject brick;
 
 void BuildPyramid(){

     // The Position of the gameobject relative to the shape that's created in the gameworld
     shiftBrickX = brick.transform.position.x-5f;
     shiftBrickY = brick.transform.position.y -1f;
     shiftBrickZ = brick.transform.position.z-5f;

     for(int i = 0;i < layer; i++){

         // The amount the gameobject is moved on the next layer
         shiftBrickX += .5f;
         shiftBrickY += 1f;
         shiftBrickZ += .5f;

         // The Shape starts from left to right, than builds in a spiral motion.
     for (float j = 0; j <= cols; j++) {
             GameObject tempX = (GameObject)Instantiate (brick, new Vector3 (shiftBrickX + j , shiftBrickY, shiftBrickZ), Quaternion.identity);
             tempX.transform.parent = transform;

         if(j == cols){
             for (float g = 1; g <= rows; g++) {
                     GameObject tempZ = (GameObject)Instantiate (brick, new Vector3 (shiftBrickX + j , shiftBrickY, (shiftBrickZ + g)), Quaternion.identity );
                 tempZ.transform.parent = transform;

                 if(g == rows){    
                     for (float h = j-1; h > -1 ; h--) {
                             GameObject tempMinX = (GameObject)Instantiate (brick, new Vector3 (shiftBrickX + h, shiftBrickY, (shiftBrickZ + g)), Quaternion.identity);
                         tempMinX.transform.parent = transform;
                         
                         if(h == 0){
                             for(float k = g-1; k > 0 ; k--){
                                     GameObject tempMinZ = (GameObject)Instantiate (brick, new Vector3 (shiftBrickX + h, shiftBrickY, (shiftBrickZ + k)), Quaternion.identity);
                                 tempMinZ.transform.parent = transform;
                                 }
                             }
                         }
                     }
                 }
             }
         }
         cols -= 1;
         rows -= 1;
     }
 }    
 void Start () {
     BuildPyramid();
 }