Chill bird, you'll be fine!
Blipping is icing on the cake, it doesn't really matter if you do it or not.
When you had your slipper, how often did you notice it really work? Think about it, not very often I'll warrant. The only times mine really earns it's keep is into the hairpin at Cadwell. Any other time, as suggested by Chris, feather the clutch out. Waving the back end is more caused by weight transfer than slipper or lack of it. Lack of slipper = chatter and or rear wheel lock up. Weeksy fell off because he locked his rear wheel through changing down too many gears for his speed, he spent too much of his ten dollars trying to brake later and forgot everything else.
You can hang on under braking with your knees/thighs, you shouldn't be gripping on with your arms, it'll just tire you out anyway.
It's like anything else, start slowly and work up to speed. Once you're used to it you'll do it without thinking (spending any of your ten dollars!), and you'll be waggling your rear tyre, hanging off, braking, blipping and looking where you're going all at once! Promise
