I'm not even close to the experience level of many of our guys here so I hesitate to even begin spouting advice, but...
Just remember as you try this pleasant pasttime that balance is the key to building a knife that is both pleasing to USE and pleasing to look at.
Each is critical- neither is less important than the other, in my opinion.
Guards, handles and blades should all be in balance, meaning they should compliment each other in size and shape- the blade guard and handle should all be compatible in size. The design should flow...not having a lot of straight lines.
The heavier the handle, the more power one can impart to a given job. the lighter, smaller the handle the quicker the knife will be.
Typically when we think of users for hunting we don't worry about speed so much as we do being able to pop a joint, cut through a brisket area, and get a hide off prior to cutting the meat up into quarters, removing backstraps and tenderloins.
Also remember a knife with a substantial enough handle to get in there and keep your grip on it when its bloody, and a blade strong enough to take side pressures present in attempting to work through joints, or twisting motions so often used in dismantling a deer is a plus. Tempering, hardening, are really important in this regard- a knife that breaks in the middle of a job is a real heartburn creator...especially when you are off in the bush somewhere...and you don't have a back up!
If its a woodlot deer hunt its one thing- but "your knife is your life" can certainly become all too real in the wilds of Alaska or anywhere in Canada or a thousand other remote places...think about those things when you are creating a knife, for yourself or others.