Skyward shift

Im 17, and im intrested in becoming a software engineer. I learned C++ by myself, and made this game using sfml libraries. This game is a simple one, where the player is a plane at first, and has to collect points from incoming stars, and has the ability to shoot down birds if he takes a red ball. When the player gets to 15 points he will become a space ship, and can shoot down astroids and space stations with lasers. The player has to last as much as he can while the enemies start to get faster and faster, to have to highest score, and has to collect points aswell.  The player can move up and down using W and S keys, and he can shoot one bullet using the Left click. Please report any bugs or things you might like me to add to the game, but take in consideration that im still learning. Thank you!