My background is product design...
Basic process to work through - I'm not going to do it for you, that's your job

1) Set Brief
2) Break down brief into key words, phrases and problems
3) spider diagram them to expand on these words
4) use spider diagram to direct creativity for initial ideas
5) select initial ideas that have most potential
6) critique/review initial ideas, get feedback from others
7) develop initial idea(s) with most potential
Repeat steps 6-7 until you have a finished product
8) create final presentation work for idea