FDPClient How to change the icon and the background schreen of Fdp<Title Here>

Hello sir, I hope you're doing well. I appreciate your work. However, I have encountered a problem. My friend from SMP (Survival Multiplayer) suggested that I share my screen with them, but since I'm using an FDP client, I am unable to do so. Therefore, I need your help with three things. Firstly, could you please guide me on how to change the icon? Secondly, I would like to know how I can change my name. Whenever I open the game, it displays my FDP name and a GitHub link. Lastly, I'm wondering how I can change the background to a normal one. I'm eagerly awaiting your response and I would be extremely grateful for your assistance. Thank you for your kindness in advance.