May I add that it is not always necessary to wait until above acceleration altitude to reduce thrust to climb.Selecting climb early enables you to gather your thoughts before getting ALT*
The main error during go around is forgetting to check tracking. When GO AROUND TRK engages the AC will maintain the current track at the time of engagement, thus if your approach has an offset (NPA for ex) you might not be following the correct track, even though the FD's are nicely centered! To prevent this just remember to either push or pull HDG for managed or selected.