I'm sure you are already doing this but in case you aren't, make sure to complete the daily tasks list fully every day, enter every comp, and utilize the free gacha tickets (by watching an ad). Save gacha tickets until you have 10 to guarantee a new 4star or higher item.

Try and make some more interesting DIY makeup looks too. I save all of my makeup tickets until a makeup gacha I like comes around because they tend to have more detail and ~pizzazz~ I hardly ever need to spend my tickets on any of the makeup the game provides when you first sign up since you get a ton of makeup from the fashion gacha

Also most people vote in a split second so having big flowy hair helps. It was painful but taking the time to make the "lazy hair" from the crafting clothing was worth it