You may need primer, because I suppose the plastic is red. buy some automotive paints, a dark/grey primer and a can of black spray paint.
Spray 2 coats of primer, sand lightly and then 2 or 3 layers of black, first layer just a mist, second a little bit more and the 3rd a full/wet layer.
If the paint looks like orange peel, sand (fine paper) and polish, until you get a smooth surface.
That should be enough for a starter.
Carbon fibre is available a decal sheets. Check the website of Scale Motor Sports
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