The template is very easy to edit in the free 3D program Blender, even if you've never worked with graphics programs. You can save the finished image in absolutely any size in pixels.
Email me if you have any editing problems, I'd be happy to help out.
Comprises: 1 Blend file
Video example - https://youtu.be/1XEv_rnc0hI
Watch quick Blender tutorials and tutorials on editing:
Other templates: https://www.cgtrader.com/priymak