Ye look liker a thief than a horse.
Yelping curs will raise mastiffs.
Ye maun be auld ere ye pay sic a gude wad.
Literally, you will be very old ere you can perform such a promise; proverbially, of course, that you look upon that promise as of no value.
Ye maun hae't baith simmered and wintered.
"'To simmer and winter,' to spend much time in forming a plan; to ponder; to ruminate."—Jamieson.
It also means, to trifle, to dilly-dally, to go round about a subject.
"'His heart was amaist broken.' 'It maun be unco brittle,' said Claud, with a hem. 'But what's the need o' this summering and wintering anent it? Tell us what has happened.'"—The Entail.
Ye maun redd your ain ravelled clue.
That is, you must extricate yourself from your difficulties without assistance.