hello!i have been playing the piano for a few years now and have just gotten a great instrument at my home (~up until this time, i was using the pianos at my university--which served me well until i graduated!). like everyone, i don't play as well at my lessons or in performance as i do at home. to minimize error, i would like to know what adjustments should definitively be made when going from practising on an upright (i.e., the one at home) to performing/playing on a grand (as in my lessons or recitals). also, where should i be looking? my pieces are always memorized and i practice without looking at the keys but when i go to my lessons or perform, i want to be extra careful and i end up looking at the keys and my brain freaks out with that visual pattern and lose it----soooo, should i take my chances and practice performing without looking or is there some type of set point i should be looking at when performing?any advice would be appreciated in these problems spots,thanks!just me.