I use tweezers and I get all up in my mirror's grill hahaha. But I totally feel you on the lopsided thing- sometimes I just can't get it right. I think it mostly takes practice. Something that really helped me figure out how to do it was watching videos of other people putting them on (maybe that sounds weird haha) but Batalash Beauty - Sam almost always puts her lashes on in video at the end, and she gets it perfectly almost every time. But to me, it was helpful to see how she holds her tweezers on her lashes and just generally how she puts them on. I may or may not be right, but during one of her videos she also talks about how to put them on! No idea which one though!