The problem that I have with ground tiles is that it looks reapative, does anyone have any tip on making ground tiles not be reapative and have detail?

You can try these...
http://www.gamasutra.com/features/20011024/peasley_01.htm
http://pixeltutorial.cjb.net/
(especially 'Breaking up Monotony' and 'Obliterating "The Grid"')
http://tilestudio.sourceforge.net/drawing.html
You might also want to consider having slight variations of, for example, grass tiles.
There's also some discussion here...
http://www.gamedev.net/community/forums/topic.asp?topic_id=339620&PageSize=25&WhichPage=1
about tile variation.