I agree with many of the comments made by the others so far. The Stickman adds nothing to the web site - and it's a kind of distraction! The photos appear to be too large and take time to download. If you want viewers to be able to see construction details that emphasize the high quality of your father's work, then use 2 or 3 smaller size photos rather than one very large one. One photo can show the overall view of the object, such as a railing, and the others can show enlarged details of the object.
Some web sites have too much text on the pages. Your web site may have too little. For example, I feel that a brief description with each gallery photo - such as the materials used, problems that were solved, or how the artisan fulfilled the style desired by the customer - might help potential customers realize that your father is the type of metalworker they would like to hire.
LarryL