Since your still kinda new to the brushes and colours for makeup start small, like maybe only for instince with your eyes since you say you twich start small maybe with only use a light neutral (vareus shades of brown, white etc.) colour then take a bit of white to brighten up your eyes a little, then apply a layer of mascara.
A tip when your working on your foundation, concealer, etc. a face is never the same colour ever face is lighter in and around the noise but beecomes dark alpong gthe way to the hair line.
As said in other comments there are some great makeup tutorials on youtube, you can also look spacific kinds of tutorial like brush tutorial, eyeshadow etc.
Oh and also work with your hair the advice before mine was right you shoulld more with you hair like curl braid whatever.