Carbon fiber is strong, but you can't replace steel for carbon fiber. You can copy a design, but you need to change things like diamer, thickness and joints.
As you put the model in a cad program, than you can see where it flexes and what the weak points are.
Look also ad oval shapes for surten parts.
As you don't put it in a cad program, make than first some test parts so you can check the strength and in what direction it's strong.
Also look ad how to make the carbon. You can get different effects by how you lay the carbon layers on each other.
There are tricks to save on carbon and tgat is by putting an other material in the middle, but it doesn't work everywhere and it also depends on what material you use.
This way you can make parts very stiff, but weak on impact.