nice work tatyana, i think its fantastic. dont worry about anyone else, just paint what you want, how you want.
i'm new here, and your the first person i found, just why your question turned into a debate over talent or taught who. seems odd. i would have thought that attitude was a thing for gentlemens clubs and the golf fraternity.
putting asside talent, or taught by a master of essays, your doing a fantastic thing go for it.
oil paint is a great media isnt it, i use it on everything from linen to sacking, but i prefer paper. i use heavy water colour papers, with traditonal woodprimer as a base coat, then i sketch with a mix of wood primer and oil paint, and finish with just the oil paint. the primer is oil based but dries in hours rather than days and speeds up the painting process.
so, enjoy your self.
im going to fill out my user info and sit n wait for the flak.