technique for neat smd components?

Im gonna try that toaster oven way, I know there's one somewhere around here
quick ques. Is it better to have it preheated or to let the board in there as it rises?
im gonna make an attempt at placing the paste with a fine applicator, ( im thinking a empty syringe my brother throws out all the time he uses with his diabetes, ill just take of the needle and use the small end as an applicator)
I really don't feel likespending money on a stencil ill use once, maybe twice max
I don't mind being patient with the applicator, the main goal is neatness not time,
when I first tried the 0805 leds my problem was that I thought it would stay still as I solder it if I was delicate enough, ends up the leds sticks to the tip and 3 sec later its burnt lol, atleast I've gotten past that tho
btw what's smaller than 603? Im afraid to even imagine