You'll be much happier looking for it this evening, when the half-lit moon marches through the constellation Leo, passing between the front paws of the lion. It may seem like a come down for Mars to be so close to the sun and follow it so quickly down in the west at sunset. Mercury is quite close to Mars and shares its quick exit from the western sky but this is typical for Mercury. Mercury is seldom more accessible than it will be this week, so you might want to try to find this pair after sunset. Mercury is the brighter of the two, by quite a bit.
Some constellations actually resemble the object or creature for which they have been named.
Libra is a great example, with a pretty good outline of a balance, or scale, sketched out by its brighter stars. Use the arc of the dipper handle to show the way to Arcturus, the bright yellow giant star of Bootes. If you continue your arc past Arcturus, it will take you to another bright star, Spica. Spica is the brightest star of the constellation Virgo. The moon is waning this week, appearing to shrink as it moves toward its monthly conjunction with the sun.