hey, i am considering of ordering my hair piece, a full cap.
i already post a few weeks ago to have informations and i learned a lot of things...
i'm 21
why a full cap? because my hair are really not good and i will never have the same texture and color between the side and the top if i don't take a fullcap

this is the style i planned to have :

i've already tried this style with my own hair and it looks to be good... now i can't any more because my hair became really too curly and thin and my front line very bad...

but my question now is would i be able to do again cornrow like this
(not me on the photo)





or there is not way we can do this with a full cap?

i have one more question,
i still don't know how do i draw a front hairline on the template, and the side...i mean how do i know how "low" (i mean far on the face) i can go without having ventilation probleme

ps orry my english is not that good.