this is only going to damage the gear box if anything. please don't skip gears, it isnt necessary. when you're shifting let the car guide the stick for you. the only gears that need you to push laterally (to the side, slightly) to guide them in are 5th, 6th, reverse, and first.
starting in first:
pull down, not to the side, the stick wants to go into 2nd and will guide itself with minimal effort.
from 2nd push up, not to the side, the car naturally wants to go into 3rd.
from 3rd pull down, not to the side, and the car wants to go into 4th.
from 4th push up and to the right, pushing up would make you shift to 3rd, the stick doesnt want to go into 5th
from 5th pull down while applying slight pressure to the right to get into 6th, pulling down would cause you to go into 4th, because the stick doesnt want to go into 6th.
downshifting from 6th to 2nd is all up-down motions with no lateral effort required. it should all guide itself as you push forward and back, do no pull to the side, this is how you missed a gear big time. finally, from 2nd the car does not want to go into 1st, you'll have to push forward and to the left to get it in there. normally downshifting to 1st is almost never necessary. the car is capable of coming nearly to a stop in 2nd without bucking or stalling. the only time you'd have to be in first after you get going is if you're in need of as much power as possible (racing). any other superfluous use of 1st gear with damage your synchros in no time. 1st to 2nd takes the most abuse when you're racing or driving hard and tends to be the first place where you'll notice difficulty shifting.