To see or dream that you are a fashion model represents an image that you want to portray. You are trying to be someone or something that you are not. Alternatively, it symbolises your idea of beauty. You are striving for something that you cannot attain.
To see or build a model vehicle in your dream indicates that you are going through a new developmental phase in your life. You are laying out a plan.
To see a cardboard or clay model in your dream means that you will achieve great success. You proceed toward your goals in a careful and deliberate manner.