How to costomize starting document

[Christopher22581982zm1a]

How can i save this document as a starting document? 

So evrytime i start a new document i want to have the option to open a new document but insted of it having a white background i  want it to have this prespektive grid. 

it would save me alot of time if somone can help me figuer this out. 

[kevin stohlmeyer]

If you save your document as a .psd then add a "t" to the end it becomes a .psdt file (Photoshop Template). You can then double click to open a new untitled document each time.

[Stephen_A_Marsh]

Will the new document always have the same fixed width/depth in pixels?

Or will the size vary?

Does the perspective grid need to be at the original fixed aspect ratio of the original, or will it resize to the document canvas?

What is the original perspective grid - raster or vector?

What about the artboards?