It's really quite simple. Use one of the colors as a base coat, for example I did one using silver and green, the silver was my base coat. This keeps you from having bare spots showing through. Next get a container, I used a 5 gallon bucket, plenty big enough to ompletely submerge your model you are building. ( just the body, not the whole model) Fill with warm water, this is important, it will help keep the paint from setting up too quickly. Then spray the two colors you are using on top of the water, gently stir, not too much so that the colors mix togeather and form one butt-ugly color you don't want then insert your model. Sorry I don't have pictures of the one I did, They are all in storage and I have no clue which box it may be in. These things happen when grown kids move back home.