What I have learned in our first meeting is how to make a creative brief for us to have a perfect work. Example a brochure, in every work you have to set a goal. You have to communicate to your customer to set things right. You have to ask them what theme do they want, what colours, typeface, style, paper, if they want to put images, how many images they want to put, and the most important is how much is their budget. Example they want that the paper is glossy, if their budget is not enough it can't be the paper they want.
For colours you should know what is the project about if it is birthday, anniversary, opening a new café and etc. the colour should fit to the project. For the typeface it should be readable to the audience and you should know what age are your audience. For the style it must be attractive to the audience eyes.