Design of a basic flyer

I am writing a new flyer for a client as we speak - it will be tri-fold A4. It needs to be mailed in an envelope when it's complete.

It's for a new school fundraising campaign targeted to parents (asking the parents to donate some cash to fund improvements at the school) so I think something bright, colorful, professional but fun too would work well. In my mind, I'm thinking either something in a graffiti style, or traditional back to school chalkboards/chalk, rulers, ink splotches etc, although very open to creative suggestions!!!

The job is for a Back To School Annual Appeal and they want the programme to be called GIVE.

I have a very tight timescale for this - I hadn't realised they wanted design too until yesterday - so need to have it turned around by tomorrow/Friday morning latest.

I need someone who is creative, who is experienced and who can send examples. Also, someone who can deliver in the timescales stated above.