Really fun game! I know it's your first game but here are some things I would recommend if you plan to expand on this game:
Moving the controls to a seperate screen instead of having them in the menu and maybe replacing it to a logo of your game or just the title.
Screen wrapping or just making the borders smaller because sometimes the frog gets to far left or right and you can't see it.
Having an option to choose the difficulty would be also great.