Easy enough I thought I'd buy a large number stencil, spray some white glossy spray paint, and waaalaaa be done with it.... yeah, not so much.
Apparently, the craft store doesn't sell large numerical stencils. So I grabbed some poster board and made my own little number 10. I cut it out, and taped it to my already filled doorstep planter. I taped in down on the inside to hopefully avoid some drips, but it didn't matter. The spray paint I bought had less than stellar application coming out all drippy (ruined my fresh tart deco manicure). I didn't even bother taking a picture (mainly because my fingers were wet with spray paint). So I then just took a wet paper towel and tried to "white wash" the rest of the plastic taupe planter.... this also looked like crud.
I picked a font style I liked at dafont.com. And enlarged it to the size I wanted and printed it out. I cut out the number, traced them to poster board, and then using a exacto knife cut out the insides. And round two started.