How to bring the Template selection above the site name input


I am using the New Blog Template plugin for my multisite website so that when my users signs up, they select the blog templates that I have created using the New Blog Template. However, as these template selection comes after the user enters their site name and site title, sometimes, they hit a return before the selection of the template and the default Twenty-sixteen becomes the website theme. I would like to bring the template selection to before the entering of the site name and site title in the wp-signup page. Can you advise how I can do that?