Looking for easy pretty flowers for 1st time gardener

Here what ibhave to work with iut the front it doesnt get quite as much sun as my garden . Any ideas would be amazing thanks again

 

Looks nice and tidy, I would suggest some permanent shrubs for the triangular piece and a nice colourful formal bedding display for the long border. I find pelargoniums (commonly known as geraniums) to be pretty easy and infallible.

 

If that corner piece is pretty shady I would suggest an astilbe I have a hot pink one that really brightens up a corner and although it dies back in winter I haven't done anything to it and it's come up lovely again this year, colour most of the year too!