Here are some links to what I’ve done in the past
My most recent commision was to write for Cardmarket Insight, I had a great year writing mainly about Pauper but did do some more FNM level Standard and Community articles.
https://www.cardmarket.com/en/Magic/Insight/Writers/WileCoyote
MTGUK was one of my favourite periods of Magic writing, Tiny Leaders was at the peak of its popularity and I was enthusiastically covering the format.
http://www.manaleak.com/mtguk/?s=mark+pinder
My first writing gig was for MTG Twincast, I won a competition and ended up writing every month getting store credit at a Magic card singles site.
On_Common_Ground 