I like the design. It's a little light on "style" but that will come in time. Next time start with some drawings. Post them here and get some feedback on the design. After you have that worked out make a template or mock up of the blade out of cardboard, hardboard, plexiglass or some other fairly stiff material with a little thickness to it. Then go slowly, taking the time to do every step with precision and care the very best you can. A few knives done well will teach you far more than a lot of knives made without focus. You don't really need a belt sander for the handle. You will be surprised how fast rasps, files and sandpaper will get you there. It is very gratifying and also scary when someone likes your work enough to ask for one. On one hand you feel kinda proud but also a little scared because it's not as nice as you'd like or may not be heat treated well enough etc. It's ok. Make them a knife. Every knife you make is more experience. As long as you represent it fairly as to your level of experience the recipient will understand what they are getting. If you stick with making knives, and you should, you will get much better. There are lots of very talented and knowledgeable folks who contribute here. Keep checking in with your progress and asking for feedback, advice and technical help. You will get better much faster than trying to figure it all out by yourself.
As far as my design, what you suggested, is actually pretty much exactly what I have been doing for the last 10 knives or so.. I will either find a picture of a cool knife and use that, or modify it slightly to my liking in photoshop, print it out, paste it onto hard cardboard, cut it out. From there I can feel what it is like, and see what needs to be changed. From there I trace it into my steel if I am just removing stock, and go from there.
Eventually I will try to come up with my own, totally original designs, I am good with that kind of thing, I did a lot of graphic design in my past... For now, like I think I have said, I need to focus of my application of techniques with the tools and learn them inside and out, THAT is the hardest thing about this, from there, it should go well.. I am creative, I am not unintelligent, I do like to research, and I can understand the principals behind such things as hardening specific steel, or what steel is best for what, ect.. My biggest frustrations are, I have never, ever done any hands on "crafts" like this before so I have no experience. I have rarely used these types of tools before (13,000 RPM grinders... 2700 degree fires.. 30,000 degree plasma arcs... These are serious numbers...) I find power tools scary, despite my safety precautions..
I actually never considered using a file to remove wood material before.. That seems like it would work.. Just like, a regular steel bastard file perhaps? I have heard of "rasps" before, but am unsure what they are exactly.. Will look those up after I post this.. Though, I can't help but think how great it would be to just press a piece of hardwood onto a spinning belt for a few minutes and take half the thickness away, just like that. Unless I am seriously advised otherwise, I think $150 or so would be a good investment for fast wood material removal alone, I do intend to take this seriously, and stick it out for the long haul..
You nailed my feelings.. I was amazed somebody seriously seemed to think my knives were good enough to ask for one, while I am thinking they are little more then bits of sharp, shiny steel... He has seen it so far, and really likes it... I mean, I don't, not really. I could have taken more time, really made it nicer, but he specifically did tell me "Don't go overboard, I want a rough homemade looking knife." I have already decided that in a few months time, once I have my bulk 1084 steel, nice hardwood, and more experience, I will take 20 or 30 hours to make a real knife for this guy to take into the field and hunt with.