Black and white outline of 2 pictures

Hi I have 2 images I need to make more crisp. I need them for a sand blasting i am doing and to develop the image it must have high contrast(B/W) and not very thin lines. Basically just clean the images. They have been degraded due to photocopying. The Tsunami image needs to be made more crisp The fish image I need the "waves" under the fish to be solid black and I need the outline of the fish to be about 2 times as thick. This outline washes away when I develop it and it wont if it is a little thicker. I need the number 624 centered underneath the word minentaucherkompanie I have attached the images attached. The fish image only needs one image to reamin on the page. I will have follow on projects for the right person