OK, sorry but this is for your own good. There's no such thing as a decent chess coach rated 920 (highest 1505).
If you want to improve,
1) study tactics with an online tactics server
2) analyze all your games with a good engine
3) study http://www.chess.com/download/view/chesskidcom-curriculum
4) stay away from BAD coaches.

all my victories goes to my friend as well as coacher DRAGONSLAYER420, he is the person who taught me how to tackle both types castling, movement of knights and methods of escaping from knights, how to manage without queen, the week place in chess and form a team work to attack that place, openings in chess game particularly siscilian dragon yugoslov attack opening etc..... Till before i contact with him, I'm not aware of those things...