Two Photon problems

Hello, I know I should type this on Photon forum, but get answer there takes sometimes a week.

I have two problems with photon network.

1. I have players (2D) and every player can set their avatar (sprite). How can properly serialize them. Now player when join the room call the rpc in start() "GetComponent< PhotonView >().RPC("ChangeSkinTo", PhotonTargets.AllBuffered, PlayerPrefs.GetString("SkinSet"));" But there is problem, because this RPC call everyone when join to room and the sprite always change when somebody join. When is before statement "if (GetComponent< PhotonView >().isMine)", the sprite won't change in other clients (Just in client who calls it). For imagine the rpc looks this:

     [RPC] void ChangeSkinTo(string skinName) {
                    GetComponent<SpriteRenderer>().sprite = Resources.Load<Sprite>("Avatars/" + skinName);
        }
   
   

2. How client, who didn't instantiate object can destroy it when touch it by trigger?

I'm very thankful for every answer