If you have walnut avail, just plane off a piece & go for it.
Couple things I will add. The carving will be no better than the drawing. In other words, you are Carving what you
Draw. So if the Drawing is not good, don't expect the carving to be good. I spend more time getting the drawing
to suite me, than I do the carving of it.
One time I had a rifle on the bench for 18 months trying to decide What I wanted on it. I must have changed it 25
times & modified it & etc. Bear in mind I always build 2 rifles at a time, as I want one for rough in general work & on
for precise work. On the days I feel really good I will work on the precise one & draw or carve or inlet the lock or
whatever. On the other days I will do what I call grunt work, like barrel inletting, RR pipes, etc. On that one particular
rifle I had 5 barrels inlet into blanks & RR pipes in/done on other stocks before I got this #1 stock carved. I just
couldn't get it to satisfy me. And I have not & never will sell a rifle that does not satisfy
Me.Many a night I have sat in the living room or den with my wife watching TV & me sitting in my recliner doodling with
a #2 pencil, doing rifle carvings & drawings on paper, trying to perfect what I want to see.
IMHO, how much time you put into drawing & carving practice, is a direct reflection on the results.
And once you
carve it in, it is there before God & everyone. Remember you are taking AWAY wood, not adding it. You can't redo it
over & over on a stock, you won't have any stock left.
So the initial application must be your best.