I'm not a pro FV player, but I'm going to offer my FV tips here. At least you know it's not a scam, I'm not asking you to pay to read a book of unproven use - my tips are open and free, here!
- You're thinking, "oh, he's gone and planted different types of crops too." Yes, that's because I didn't have enough money to plant a whole farm of yellow melons. Despite that, my crops are timed to mature AT THE SAME TIME
- Blocking the farmer in the middle is very useful. You could use hay bales, or if you want to show off like me, mastery signs.
- Buildings are placed for maximum crop space. If you notice, there's thin strips of land on the top left and right because the plots don't fill the whole farm. I've arranged my buildings so they use up that strip of land. I know there are probably more efficient ways of packing, but this is the simplest, and it can't go too far off. Previously, I tried filling those strips of land with trees.