positioning and securing said collar on the outer periphery of {TAIL ~ said flower pot} between {HEAD ~ the upper and lower ends} 
positioning and securing said collar on the outer periphery of { TAIL ~ said flower pot } between { HEAD ~ the upper and lower ends }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD