Reddit mentions of Easy On Laundry Starch, Crisp Linen Scent, 20 oz

That doesn't quite look ironed -- go at it when it's still damp, and try some spray starch.

The second button is critical; it may not be something you can remedy...

I like the suggestions in here. Here are some of my tips of what I do:

• Before washing - Roll the sleeves down and button it up. Don't overload the washing machine else the shirts will get crushed.
  
  
• During washing - Use fabric softener. If it's a top loader, remember to only put the softener in when the water is full otherwise your clothes will be bleached.
  
  
• Do not spin dry. Take the shirts out whilst they're sopping wet and flick as much water as you can. Hang them up somewhere outside that is not in direct sunlight which can't get rained on. Make sure the shirts are sitting nicely on the hangar else they'll dry with big creases.
  
  
• Get yourself a decent steam iron if you haven't already. Also it makes it easier if you have a good wide ironing board.
  
  
• Watch 'how to iron' videos on Youtube by people who know what they're doing. This guy does really good videos. The key is to use a decent hot iron and steam it up.
  
  
• Whilst ironing, use 'starch spray'. It makes it a lot easier to get a decent finish. There's a lot of different products out there that do the same thing. You'll find it in the laundry aisle of your supermarket.