The guard gets very little credit. It is perhaps the most stylish part of many knives.There are many styles,depending on use.Some are -simple oval ;finger guard (bottom only);"S" guard;"C" guard;"D" guard;sub-hilt;and the queen of beauty -the quillion.Some ways to snazz up even simple guards are: file work them;stack three layers of metal, the center one either a different color or file worked;A center piece of non metal (ivory,fiber,wood,twisted wire,amber,etc.);blue or colorize the guard;use a distinctive metal such as damascus,mokume,or wrought iron.
Make the guard fit the knife,both physically and esthetically.A quillion on a fillet knife would look ridiculous,no matter how well done it was.New makers often tend to make guards too large.Spend as much time as is needed when fitting the guard to the blade.The solder joint (JB weld for those who don't want to take the time to do it right) line is one of the first things a skilled maker looks at when evaluating a knife.Learn how to soft solder perfectly!
Cardboard guards are a good way to try out a shape and see how it will look on the blade.
Don't be afraid to experiment,style is different for different people.
Stacy