I agree about the refined look of a flat grind vs. convex. My first knives didn't even involve bevels since I used very thin saw blades that I just put an edge on. Makes me shiver to look back on them!
I personally love a convex grind when I'm thinking about a heavy heavy use chopper. If I'm thinking camp knife, I'll often lean more towards a thicker flat grind though, as it lends itself to more uses. Recently, I've begun putting the two together and mostly flat grinding the blade and finishing with a slight convex grind. Makes for a really slick looking blade with a *slightly* more robust edge (a little more meat behind the edge) while still having the geometry to slice well. And it looks pretty

.
Something I did to begin improving my plunges (where the blade bevel meets the handle portion) was to take two square pieces of steel, drill holes on either side for bolts and sandwhich my blade between the two pieces as I began to grind my bevels. I don't take them off until 99% of the bevel work is done, and then I smooth everything out with a very flexible belt after taking the "grinding guide" off. It's kind of like a filing guide, except I just used scrapped 440C I had laying around not hardened. If you're carefull, you won't have to worry about needing a hardened steel for the guides. That really evened up my plunges and made them sharp until I have the skill to do it all free hand.
As for a critique on the knife, I like the overall design and the size looks like a great user. A personal taste for me would be to smooth the spine of the handle so that it doesn't dip in behind near the top of the handle. It's totally a personal taste thing, but I like a handle spine that flows right into the spine of the blade without any excess convolutions. If I think I need a bit extra purchase, I will file in some patterns or lines on the spine of the blade. The finger portion of the handle looks great to me, however. Would love to see a picture of the knife in your hand for size reference and to see how it all fits.
Good work, and keep going! Every single knife you make for a while will teach you something and improve the next effort. If you learn your lessons and take your time, each knife will improve greatly over the last. God bless!
--nathan