[Plugin: Gigpress] Adding image

Hi there, please forgive me if this is a little dumb. As i am very new to building a site and wordpress.

I have installed the gigpress plugin and it works great. Ive got it so it can be clicked that takes you to a page with all the details on.

Here – http://www.kis-mis.co.uk/?p=7

I am wanting to add the flyer image for the show above the Artist: part.

Could anyone please help with me achiving this as i am completly lost.

thank you very much.

Regards