Pokemon platinum team?

hi im not sure if my pokemon platinum team is good or bad so here it is :Imphernape flamethrower grassknot close combat and thunderpunch :Golduck surf waterfall psychic and icy wind :Leafeon giga drain dig toxic and aerial ace :Driblim fly thunderbolt shadow ball and explosion :Hippowdon earthquake double edge yawn and rock slide:Glalie ice beam crunch shadow ball and iron head tell me what pokemon should i replace or what move i should replace thank you so much and notice about driblim bye