painting emperors children

hey everyone. so i bought my first warhammer set 2 weeks ago. which where the emperors children tormentors (the week after i also bought fulgrim because i liked building the characters but im not gonna paint him for a while so thats irrelevant lol) and i just now started painting. i got a official warhammer starter paint kit. and a few new (and i hope better) brushes. but i HATE the painting so far. yes i know i need to learn. but i feel like it isn't just skill. the paint is messy. some details in the models are almost impossible to reach etc etc. if anyone has tips or tricks for me. whether they be harsh or not. please tell me. because im already started to not like painting lol