hello
i spent a good few hours digging in the soil in the front garden (its about 8 foot by 2 foot bedding area surrounded by concrete). i did it roughly how monty don suggested only i did it a spades depth because i didn't have the strength to do it 2 spades depth as he suggested!
then i laid down LOADS of compost- 250 litres!
then i got planting. we put in some morrisons reduced petunias (perhaps a mistake for an inexperienced gardener not used to reviving nearly dead plants...), some good quality geraniums, some reduced lilies (they were in a good state), and i think some verbenas (good quality). also a poundland rose bush lol which only time will tell if its just a twig 
i did all this over the last 6 weeks or so, plants were put in over the last month.
but the bedding plants don't seem to have settled into the soil, a few seem to have pot shaped clumps of soil below the actual plant, which are just sitting in the compost. there's the odd flower here and there but i would have thought more would have happened by now?
the only thing showing a bit of growth is the lilies, the buds have got bigger but no flowers yet....
oh, also in an amateur kind of way, i did some soil testing- i think its clay soil, good drainage, and neutral ph 7.5. there is a lot of sun in the morning (sun rises from there= east facing?), but there is a c1.5m brick wall edging the front of the border.
thank you if youve read this far! what am i doing wrong? please help! me and 3yo have put a lot of effort into this and we're really upset that nothing's happening...