I am looking to paint 4 old concrete garden planters as per the images attached. They were covered in moss/mud and have all been Jet washed clean. The painting part is the easy bit but could someone advise the best way to keep an ‘aged’ look when painting new? I don't really want them looking like they've just come out of a garden centre. Also, would masonry paint be ok to use in this instance? Sandtex or similar? Any help or guidance would be appreciated.