diff --git a/modifiers/trail/trail.wren b/modifiers/trail/trail.wren
index 3ed209d..a81e106 100644
--- a/modifiers/trail/trail.wren
+++ b/modifiers/trail/trail.wren
@@ -301,15 +301,12 @@ class TrailSystem is ModifierSystem {
 
 			var step = data.length / data.subdivisions_length
 
-			System.print(1 - instance_data.progress_since_last_point / step)
-
-			var point_index = -1
+			var point_index = instance_data.points.count - 1
 			while(true){
-				point_index = point_index + 1
-				if(point_index >= instance_data.points.count - 1) break
+				point_index = point_index - 1
+				if(point_index < 0) break
 				i = i + 1
 
-				var x = instance_data.points.count - i
 				var p:Point = instance_data.points[point_index]
 				var next:Point = instance_data.points[point_index + 1]
 
@@ -335,7 +332,6 @@ class TrailSystem is ModifierSystem {
 
 				Math.normalize(up)
 
-
 				//pos_x = to.x
 				//pos_y = to.y
 				//pos_z = to.z
@@ -349,9 +345,9 @@ class TrailSystem is ModifierSystem {
 					var offset_x = Math.lerp(-up.x, up.x, t)
 					var offset_y = Math.lerp(-up.y, up.y, t)
 					var offset_z = Math.lerp(-up.z, up.z, t)
-					positions[x*4*data.subdivisions_width + y*4 + 0] = pos.x + offset_x * data.edge_length * 0.5
-					positions[x*4*data.subdivisions_width + y*4 + 1] = pos.y + offset_y * data.edge_length * 0.5
-					positions[x*4*data.subdivisions_width + y*4 + 2] = pos.z + offset_z * data.edge_length * 0.5
+					positions[i*4*data.subdivisions_width + y*4 + 0] = pos.x + offset_x * data.edge_length * 0.5
+					positions[i*4*data.subdivisions_width + y*4 + 1] = pos.y + offset_y * data.edge_length * 0.5
+					positions[i*4*data.subdivisions_width + y*4 + 2] = pos.z + offset_z * data.edge_length * 0.5
 				}
 			}