Welcome 
…
…usually to get the correct perspective from an image someone can use something like:
also this tutorial :
…give some insidhts about possible problems…
This said it is somekind of problematic to get the proper perspective from an image with any vehicle only… but you can try…
…but then you might get better result by “reading” ( meaning guessing ) the form and just model it… it’s not that complex (not too much curves)…
Also you might just use the front, top and side view from th original image… from deviantart hoborginc art B-21-Aldings-319970316…