Confederate FULL DRESS uniforms, at least in regulations and typically found mostly early in the war, were similar to that worn by the Federal Army.
There was, however, no "standard" uniform, especially in the South. There were not only variations between the various corps (what we call branches today - infantry, artillery, cavalry, etc), but also within each State, and even within each regiment.
What you need to do is identify the particular unit you want to recreate in FULL DRESS (as opposed to UNDRESS, which was the uniform they wore to war). If you can identify the regiment you are interested in (or even the particular company within the regiment) you can probably find at least a description, if not a photograph of the uniform. If you're lucky, there might even be a museum with an original that could look at. I know the Museum of the Confederacy in Richmond, VA has a nce collection, most of it not on display.
For the most part, you are looking at the undress uniform but with epaulettes (brass scales for enlisted, gold for officers). The hat would probably be a "Hardee" style hat or something similar, again depending on the Regiment. Kepis were for undress, but later in the war, undress served just as well as full dress.
Hope some of this helps. If you have a specific question, give me a hollar.