A4 landscape certificate for cycling

I am running a cycling course and need some end of course certificates designed.

The certificate will include the following:

Company logo
Coach; Steve Brown
Congratulations type banner
Space for childs name
Space for signature and date
Space for my contact details
Lanscape layout

The course is aimed at kids aged 5-8 or so, so it needs to be cool not childish. My general colour scheme is White, Black and Red. I'll send my website to the person I work with for reference. The font to use is Arial. I like minimalism style.

They should be print-ready.

I'd like 3 revisions of design.

Updated:

In an ideal world I would like a the border of the certificate to be made up of lots of different types of bicycles but without it looked to crowded. See attached for a few sample images. Remember minimalism is key.

I'd also like a place to a picture of the child cycling, about 40mm x 40mm