Ok lets start it off straight up, If you are teaching Ashe and just started playing with her you shouldnt play with her to begin with so early, I Didnt start to play with Ashe on ranked before i even hit lvl 5 on Ashe.
Ashe is very relevant, She is an easy late carry if you get some powerspike items and she is a very good carry with a lot of damage in late game, You gotta still watch out because some people will play better then you in solo queue no matter what. So dont get upset about a loss by playing Ashe is a hard adc to master and learn. An Ashe main can be a dangerous guy on the rift, I would say if you belive in youre skills you are good to go and play ashe.

I Dont have a lot of points on Ashe im telling you straight up. But i have enough knowledge on that champion to make a guide like this. Some people are couple million points on some champions, But dont let it stop you by playing Ashe dont give up if you have a bad Ashe game, Try to feel motivated to play her and learn her to get the lvl 7 mastery that you can spam and be proud of what you have done so far.

Ashe's Teamwork is amazing. She is very strong in team fights and she has a huge damage in mid to late game. She has a huge aoe damage if you build Runann's Hurricane, And her ultimate is very good to caught youre enemys off guard.