then simply apply the tape so as to leave a a 1/4 line. you have to tape
both sides of the joint.

another key thing is to smooth it as soon as possible after you apply the
bead. if you wait any longer than necessary it will have formed a skin and
trying to smooth it ends up pulling this skin around making it look awful.

also you really want to try not to fidget with it. try to smooth it in one
go and call it good.