global AO and BUMP MAP texture editing

i need some help with the textures of the arm sleeves in global files
im trying to put the nba sign on the textures and i did it with gimp and it lookd great but in game it looks all wird and mesd up can some one tell me what am i doing wrong?
because i based my knoledg in this stuff from making courts and jersys but in this things merging files is fine only in global textures its wrong
thanks for the help anyway