I have made a quick playblast of what I've done in preparation for the final pre-viz. I made a cube and applied a UV that has the bike design, that I made. This is very silly in itself and has a fun look to it, which obviously helps due to the target audience. I have done the same for the second scene and that will be the next post.
After looking at the feedback, I chose the red bike. It looked the most suitable for the boy and will stand out more, in comparison to the other colours.
Below is the bike and UV that I used: