Related Clues:

• 'If you want a thing done properly, _____'
• Permission to proceed
• Handyman's motto and practice
• Enterprisingly progressive
• "Get cracking!"
• Two-thirds of D.I.Y
• 'Get busy!'
• Party for computer department gets go ahead
• Thing of little value — copy many answers here without a break
• Nike slogan, 'Just --'
• Pioneering (green light?)
• "Get busy on that!"
• 'Be my guest'
• 'Quit stalling!'
• 'By all means!'