I really want to build some raised beds either wood, sleepers, or anything similar. The length is of the area is 22ft and ideally they'd be 2.5ft wide, and about 1.5 foot high, it'd be against a brick wall so wouldn't necessarily need the back part. Can I do this myself?! Finding it hard to source anything, I know it will probaby have to be seperate lengths... just want it basic but don't have any fancy tools and am just a girl 😅