You can't. But it's fun to see what people think it would be like. One thing I've noticed is that your compatriots all seem to have a rosy future predicted for the Confederate States. Unjustified, IMHO. I think that, given its start, the Confederacy faced a harder and more problematic future than you all care to admit.
The downfall of this nation will be at the hands of the urban areas. To great extent the Civil War was fought between urbanites and agriculturists. It is still going on.
If the rebs had semehow won the first war, it is doubtful whether the Confederacy would have even lasted 20 years. The Southern people would have soon tired of the oppression and exploitation of the many for the benefit of the few and would have thrown off the tyranny with the aid of their countrymen to the North.
Well I have no idea what it would be like, only what I hope it would be like. Perhaps like the Montgomery Alabama that I remember as a very small child. The Montgomery that my ancestors speak of in their letters, journals and diaries.