This game was, I thought, going surprisingly well for me given the rank difference, until I left a critical aji and a big group fell to pieces.
Thought it’d be a good chance for my periodic checkup. Picked a game I lost this time; go humbles everyone sooner or later 
Glad to see you’re looking to challenge stronger opponents. Unfortunately, you’re still missing some fundamentals like hane at the head of 2 or 3 stones, extending from influence, etc. The opening was interesting, but it was also kind of inconsistent. You may find my Guide to the Opening I posted here last week instructive.
Thanks for the review. I’ll go through your guide and see what I can learn 