My portfolio differs in the size of the images, but the outer dimensions of the mattes are all the same. If possible, keep all your mattes vertical and the images can be either horizontal or vertical, and of course square. Next is the image order. This is most important. Images from one project may work together, but sometimes you can follow one image with something diverse, if it has the right content, the right feel. What the poets call a ''slant rhyme.'' Undoubtedly you will get different reactions to what you come up with. Listen to criticism, but weigh it carefully before yielding to it. You must develop your own deliberate method as an artist, IMHO.