Compositing is the combining of visual elements from separate sources/departments into one single shot, often to create the illusion that all those elements are parts of the same scene. Live-action shooting for compositing is variously called “chroma key”, “blue screen”, “green screen” and other names. Different types of compositing are: CG, Live action, Stereo.
You want to be an advanced level knowledgeable person then you have to be updated until today about various techniques, new tech, and also industry updates like software knowledge Fusion RealFlow, PFTrack, Nuke, 3ds Max, Autodesk Mudbox, FumeFX, Adobe Photoshop, Adobe After Effects, Mocha, etc.
Most software does a specific task in a similar way. You have to understand visual effects isn’t about software. Most big studios don’t even use off-the-shelf software; they have their own propriety tools. Visual effects are about knowing the principles, techniques and problem-solving. Once you are good with that you can apply that knowledge to any software.
You will need training and experience in all forms of makeup: standard cosmetics, theatrical, and film makeup. You will also need to develop significant fine arts skills in drawing, painting, sculpting, molding, and casting. You should not be afraid of chemistry and mechanics, either. Years of practice and training are required, and the supplies aren’t cheap.