I pretty much alt pick everything i play apart from heavy riffs i usually downpick as i think its sounds better, but my guitar teacher picked up on that when i alt pick i go up,down,up,down,up,up or vice versa if the next note follows in the direction of the pick is this going to cripple my playing or not?

if its not very clear ill try and include a tab to show what i mean

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No, if I am reading your explanation properly you are economy picking. It is not a bad thing, if anything it saves time because you don't have to get the pick on the other side of the string and then move your hand in the opposite direction. In the end it is more efficient.
if the last note is above the second to last not then that would be economy picking
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