iPad icon design

Good afternoon, I'm looking for someone to design me three icons for an iPad application, the application will be used to manage constructions planning. So I will need three icons in vector format, two in iPad format (iOS icon) and one in normal OS format. I have attached some examples of styles but you can help me suggesting your best and/or a different style. So these are the icons I need: Icons on iOS format: - An construction helmet (hard hat) over constructions plans. - Clipboard with a BIC pen over constructions plans and tasks lists. Icon in normal format: - An briefcase similar to a moleskine (inside should be construction plans or drawing of houses). If you can provide me a sample of this it will be quicker for me to hire you. Please provide me your portfolio, time to complete the work and your price. Thank you