re: DIY Landscaping - Anyone here done it?

I’m planning on DIY landscaping for our new construction which should be completed late spring/early summer next year. After final grading with topsoil, I’m planning on marking the bed locations then topping with free compost from the local landfill. Probably not the best, but it’s better than what is currently there and it’s free. I’ll just let the compost sit and decompose a bit before planting and mulching. I’ll spray weeds/grasses that come up before planting. House pad is 32” above natural grade, so I’ll grade with fill dirt to reduce the slope angle away from the house then top that with several inches of topsoil.