You need to tell us where you live, so you can get the appropriate advice as to what will grow in your area.

And not just where you are, but who you are (retirees who love gardening, professionals with no time for it, family with small children, other?) and what you would like to see and do in this space. Dimensions would be good too; it's hard to judge the size of an empty field.

Blank slates are always daunting, but I would want to create privacy, peace, beauty. Think big, on a much larger scale than the three little beds. It helps to have an overall plan in mind, even though you might need to start small. Landscapes take a while to mature, but can be made gradually, as time and $$ allow, and they always evolve anyway. Here's one vision:

You start by establishing trees and large shrubs, a mix of deciduous and evergreen, and in what looks to be a large yard (and no trees in sight in the entire barren development), plan carefully for placement of large trees then understory trees.

Small beds won't be satisfactory. Your shrub/tree borders should be at least 15 to 20 ft deep front to back.

If you are complete novices at gardening, hire a good landscaper (the key word is good, not someone who just sticks in big box plants) to help you lay it out and get started.

Do you have an HOA that dictates guidelines on what you can and can't do? If so, what are they?

Sorry but where exactly is your yard in this weird area of no fences nothing to establish your space .The grass looks greener but I bet that is a shadow cast from the house . A good deisgn require parameters we have none .Yes we need to know about an HOA God help us.

Some inspro

or just flower bed