Improper Format Was scammed by Special Ed

Special Ed and I started discussing how much he would buy my stormy storm honcho's headgear for when he offered to broker it for me. im new to this trading business and he was very convincing so he got me trade my unusual to him plus a 'brokerage fee'. a day later he unfriended me and blocked me so i couldnt contact him anymore which means i cant screenshot the chat. i know it's really stupid of me to believe him but it's a huge loss and i dont want others falling for the same trick.

Victim:
|steamID: =HigH= Dezicman
|steamID32: STEAM_0:0:41887914
|steamID64: http://steamcommunity.com/profiles/76561198044041556
|customURL:
|steamrepURL: http://steamrep.com/profiles/76561198044041556

Scammer:
|steamID: Special Ed
|steamID32: STEAM_0:0:42116225
|steamID64: http://steamcommunity.com/profiles/76561198044498178
|customURL:
|steamrepURL: http://steamrep.com/profiles/76561198044498178

trade history:

im new to this so tell me if i need to add anything for proof. i spent so much time and money and it all just got scammed away by this horrible person. i would like retribution