The streaks are most likely your technique. Be sure to use a very soft rag when doing this, I usually use a white t-shirt for this. Use light touch and reduce the amount of shellac or a little more oil. It takes a little practice to this. It will lookk smeary after wiping down with naptha this is normal. Apply quickly in a circle and then finish with a light touch going straight across. It may take several applications to get the look you want.
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