Can someone help me how to get a 图标 in a 粉丝 club?

unless 你 created the club 你 cant change the 图标 on your own. make a pick on the spot asking other 粉丝 for their opinion and to give them a chance to 提交 new ideas as well. once the 粉丝 have chosen 你 can message papa 或者 dave and they will change it
for 更多 info (and i do encourage 你 to read it cause this is just the basics that i put down here) read this article:
link 你 will find your 问题 answered at number 17!

and 你 should read the whole thing cause dammit its pretty good!