the best advice any welder will tell u. practice practice practice. the more u do it the better ull be. and also doing steady hand exercizes is helpfull if ur willing to waste some time

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1. balance pennies on the tips of ur fingers on one hand(palm up, or down if ur really good), then hold it for 5 mins.
2. balance a pencil on the side of ur hand and start writing or doodling untill u can hold it for a while then move to a less balanced larger object like a drum stick.
im shakey as shit and still cant weld that good but doing that really did help me to improve believe it or not.
oh and when welding, the steader and smoother the "ticking" sound, the better ur doing.