I am naturally southpaw so I don't go orthodox all the time, but for landing the right cross, it helps to change the angle it comes in at. You can come from so many angles with the cross and its important to utilitize all of them. Another thing you have to remember is unless your are incredibly fast you shouldn't be throwing lead crosses until you are very experienced and know how to set traps.

I also like to throw the right hook a few times to get the opponent to realize you aren't just coming in with the cross everytime. Even though you should never fight like he does, watch how Roy Jones uses angles and a myriad of different punches to find openings on his opponents. Which leads me to another point, try using footwork to set up different angles as well.

Its hard to say what you should do in order to land the right hand and throw it better just because we don't know what kind of fighter you are.

I think Tszyu is an excellent guy to watch, and Kelly Pavlik if you walk your opponent down and like throwing a one-two. Another great guy to watch is a younger Hopkins. He is so good at setting traps now he doesn't need to set up the right as much, but his stuff in his prime was great. Monzon might be a guy to watch as well.