First in 2008 Ailsa-chan made me do it! I made a couple of costumes, then I bought a house and learnt renovating a house eats up all your time.
I have been to the following cons (click links for photos): Minami 14 Amecon 08
Minami 15
Kitacon 10
Minami 16
And plan to do some amounts of cons a year, but probably no more expos, for however long I keep cosplaying which I'm getting back into now the house is nearly 'done'.