Welcome to the forum and gambling world as well. Please remove this part from your announcement thread to avoid a permanent/temp ban.
An announcement thread isn't the right place to run a giveaway. You are paying who replying in this thread. It will consider a thread bumping service. The right place to run your giveaway is Games & Round section. You can link up your giveaway thread on the announcement thread. But you can't run giveaway directly in the announcement thread since it does require replying on the thread.

By the way, the announcement thread would be more attractive, just hire someone to make a good design.