A few things:
You shouldn't need to scrape your skis before starting.
Hold the candle in your hand you pussy. That was a pretty bad base repair, get it birning nice and hot (blue), and keep a metal scraper/plate handy it it gets out of control.
You're using both scrapers at the wrong angle. I'm surprised that base repair held when you scraped like that. You're pulling wax and p-tex off the ski that way. Angle it the opposite way and you'll push wax into the ski while scraping it off, and will be less likely to rip out parts. Better yet, just use epoxy, it holds better and performance disadvantage is minimal.
Go slower on your passes with your iron. One or two one-minute passes is good. You WON'T damage your base goign this slowly.
For whoever said not to use a clothes iron, that's bullshit, they're fine to use. Preferably an older one with a nice thick sole, and even better with no steam holes. We used one with steam holes in my shop most of last year and our boss was a former Swix WC tuner. At the shop I'm at now, our boss told us to buy an old clothes iron if we wanted a backup.
And to everyone saying to use base cleaners/wax removers before waxing, those are pretty bad for your base - you should just use them to clean up areas of base getting repaired. Hot-scrape your skis if you want to clean them.