ok, thx.. i try create dirt map for this.. but this be my first time maybe you have any axaple or good tutorial for this.. thx

That's not a problem with SketchUp. It's a problem in the way you're doing it. If you copy from one while and use Paste in the other file, you have to click to drop the copy somewhere. Otherwise SketchUp doesn't know where to put it. You could use Edit>Paste in place and the copy will be pasted into the same relative position as in the first file. Uninstalling and re-installing isn't a solution to your problem.

Ditto to the comments made above + perhaps work on the paving material too and model the paving joints and junction to the grass area

Awesome renders, really like the mood of the first, maybe a bit of variation in the trees in background.

I like it! Light, materials...is every naturally and great!!!