any advice ???
You have 1 routine, which doesn't seem to be very solid anyway(it's 1 card trick, 2 impromptu, and one angle sensitive). It wouldn't flow very well, and and you can never use anything angle sensitive in a restaurant.
You need atleast 3-5 good routines, 3 effects each, and be able to start and stop at any time(incase the food comes early, or you're requested by someone). Everything has to reset automaticly.
Don't think that you're going to get hired by the first restaurant you talk to(which seems to be what you're thinking), and don't go to that one first. If you have one you really want to work for, forget about it. Contact other ones which are more likely to hire you, you don't want to get turned down by your #1 choice automaticly, leave it as something to work for.
Pick up some books, The Restaurant Worker's Handbook, Making A Living Entertaining In Restaurants, and even read Steve Guinn's articles at Visions. If you're not 16, don't expect to get hired AT ALL. If you're not old enough to even be on the pay roll, then chances are they're not going to give you a chance. Even at the age of 18, they'll still treat you like a kid.
I'd recomend, you get alot of good solid routines, and start doing free closeup performances. Go to children's hospitals and perform there for free, in closeup situations. This will improve your ability and performances. Go to old age homes, perform there in closeup situations, anything to strengthen yourself. After you've been doing this for a while, you will likely start getting asked to do private gigs(if you're good), and edited after you've started getting private gigs, you may not even want to work at a restaurant anymore. But from all this, you'll gain experience, knowledge, and ability, so that after a year or 2, you can confidently walk into that restaurant that you've been hoping to work for, blow their mind, and get the gig.