How i won 1 game and draw 1 against an IM
In some Simuls on chess.com i won 1 game and draw 1 game against an IM, so i am very proud of these games.
If you want to evolve in chess i recommend to you to play long games, like 60 minute games against strong players, because you can learn much from them. And play is Simuls that IM's , FM's or NM's offer on chess.com. In long games you have time to think, to calculate and to analyze the position.
Calculation in essential especially in critical positions ! Try to play positional games , but of course always look for tactics when it is possible. Try to place your pieces on the best places possible.
Don't open files or diagonals for your opponent !
I also recommend to you if you want to evolve to study the games of GM's and to do Tactics and Lessons on chess.com.
I am playing every Fridays with an IM 60 minute games and 1 time i won, because at the end he lost his queen because of a mistake, but anyway i still had a draw, and 1 time i made a draw. Of course i lost some games, but i am very proud of these 3 games. I recommend to you guys to play long games with strong players if you want to evolve in chess ! It worked for me !