Fix that hinge in the lower limb! It will be good practice.
Mark a big X in pencil right on it on the belly.
With a scraper-like tool scrape above and below it leaving that area alone.
You can leave that bow strung when working that hinge. Take 10 or so short draw pulls and of no more than 10 or so inches.
Repeat until the hinge is gone.
There are a few stiff spots in the top limb. Fixing those will bring the tiller home.
For your first no need to reflex and recurve. Don't use power tools.
When removing wood go a little beyond the problem area to blend it in.
Don't draw anymore than it takes to expose a problem.
The best fix for a hinge is to not get one.
I'm not in a hurry when bowyering so once I string the stave I'm using a scraper-like tool.
My site may help.
http://georgeandjoni.home.comcast.net/~georgeandjoni/index.htmlJawge