Wow, lucky you

I'll do my best to give you a hand. . .
Jackie:
If she wants you to frog tie her, then I wouldn't worry to much about her being uncomfortable - that particular tie is designed to be fairly strenuous, so if she's had any previous experience of it, then she will know that there's an element of discomfort in it. However, frog ties themselves are fairly easy to do. Get her to lie on her back and bend her leg so that the heel of her foot is as close to the back of her thigh as possible without being painful. Once it's in place, tie a rope tightly so that it pulls together the lower part of the ankle and the higher part of the thigh. Repeat it on the other leg. You can add a lot of thing to a frog tie to make it more intricate - add more ropes on the legs, use an extra long rope in order to tie the basic frog tie and attach a waist binding, you can add breast bondage etc. However, if it's your first time doing one, best just to stick to the basics.
Amy:
I really have no experience of meantal torture I'm afraid. . .It's probably best to ask her what she means by it and what particular kind of mental teasing she likes. Does she want you to poke fun at her? Does she want you to threaten her? I'm sure she has something particular in mind. It's also a good ida to talk to her about where her boundaries are or if anything is off limits for you to talk about. You do't want to end up actually upsettig the poor girl!
Patrick:
There are lots of different types of tie up you can use that will restrict movement. The obvious idea is mummification. If that's not his kind of thing, just get inventive with normal ties. For instance, a spreadeagle can immobilise someone if you add more ropes on to them tightly. Same thing for chairties. You might also tie a very strict hogtie - though it depends how keen on he is on pain, because after even a few minutes, they can begin to get very painful, especially if you're not used to them. Why not ask him what his favourite tie is and then get creative? Just have fun with it!
Jamie:
I'm afraid that I have absolutely no idea what to suggest here! What kind of electrical implements? Sex toys or household appliances? If its the latter then I would avoid it as it doesn't sound incredibly safe. . .Just avoid having water around

Hope you have fun
