We work on projects given by our clients and execute them within the expected deadline. For long term projects , we show our work first 1 or 2 days and once we get a green signal , we proceed with the project and we have all sorts of expert to work on your projects , so please do not worry about that . We expect billing every 2 weeks so that engineers are comfortable working on projects , we have had clients whom we showed our work and later they became unresponsive . So we are trying not to let this kind of things happen to our engineers .