You can’t make horn of a pig’s tail.
More Portuguese Proverbs:
Let every man mind his own business, and leave others to theirs.Portuguese
Make good flour and you need no trumpet.
Portuguese
Serve a lord, and you will know what it is to be vexed.
Portuguese
Before you marry reflect, for it is a knot you cannot untie.
Portuguese
To be slow in giving ant to refuse, are alike.
Portuguese
Better be one-eyed than quite blind.
Portuguese