I need major help. I've played RCT3 forever but I never got the hand of terraphorming. If anyone can terraform me a Sandbox park? I'm thinking about a park with almost a frontier theme, I would like a entrance area with a couple western town wall buildings for stalls and a walkway to branch off into assorted flat rides but the most important part that I need is a smaller realistic size lake to maybe put a water ride on and a smaller natural looking one for a giant flume ride just the normal up and down kind that you see in real life. Most of the work will be needed for larger sized hills with for a couple of larger sized roller coasters with pre-built stations so I know where to put the roller coasters, next a couple of caves to maybe have a roller coaster to plunge through and lastly waterfalls leading into the larger sized lake and on the hills and possibly a mountain with a waterfall. You can use any CS you need to just include it in the download link possibly or tell me in a post also I have Soaked! and Wild so use whatever you would like. Thank you for your help I'll keep in touch.

Use a 50 size hill and canyon and it's easy. Then smooth everything out.

Alright, thank you, any suggestion on smooth hills and the mountains? I don't want huge peaks though.

There's a smooth tool.

Just like becoming great as using CS, becoming great at terraforming takes practice and the only way to do that is to open a sandbox and experiment. Not every park you start will end a masterpiece. Create a special folder to save all your experimental workbenches in so you can come back to them whenever you have the urge to polish your skills.