Game interface graphics

I need the graphics for an a game that I am currently working on. It is for Android mobile phones / tablets, and is a kind of building game. Similar to "LEGO Digital Designer". I am looking for only interface graphics. That is, almost entirely icons, a menu design and a logo / promo image. I would estimate that there are ~ 15 basic icons required. The main creative element would be in the logo / menu designs. The graphics will need to be vectors, as they will be exported in several sizes. Due to the target audience, they need to be bold, colourful, simple, and stylish. I can provide a basic concept for each one which is required (ie, Delete Icon => Bulldozer etc.). Though, not childish as to put off adult users. I have no restrictions on time, and if taking longer so you can work on other projects alongside means lower cost, this is beneficial. I am a freelancer myself, and expect the same level of professionalism and contact as I provide to my employers. I prefer English speakers. You will not be considered if you do not provide an appropriate portfolio. Be prepared to discuss your thoughts on the project in your bid, what sort of style etc. you would go for. If you provide a generic spam type bid, you will just be ignored. Price will be an important factor, since the game will actually be free, but I am willing to pay for quality. The budget range category I selected is not necessarily what I am looking to pay, exceptional work deserves higher rates. If your work is good, at a decent rate, I will have many more similar projects in the future.