Paper/vinyl piecing question? Cricut, too

[labdogs42]

I want to make construction vehicles (e.g. dump trucks, a crane, backhoe...) to use as decorations on DS's wall. I plan to cut pieces/shapes out of vinyl with my Cricut Expressions (using Design Studio) to make the trucks. I don't do a lot of paper piecing, so I thought I'd ask you guys. Should I make a "background" shape to stick all the pieces on to or should I just make the shapes and stick them on to the wall? KWIM? This is what his bedding looks like, to give you an idea of the vehicles I'll be using as my guide. Any suggestions as to how I should attack this project? Thanks!

 

[AlexWyattMommy]

I would not want to waste the vinyl, so I would just make my pieces and stick them to the wall and hope for the best.