when practising scales,try this,a four note tremolo down up down up,four picks each note,it will help you to gain competence with the right hand.
down up is recommended ,by some, for reels for groups of quavers.
try also playing a chord, fret top string 3 fret,second string 2 fret.now play this chord like this 3 strings down,2 strings up 1 string down,2 string up.
then start again but reverse all the picking so you start on an up.
you should eventually be comfortable picking in any direction.another useful thing to practise,is playing in 6 /8 time across two strings,lets say second and first,try playing six quavers aee aee down down up, down down up.