As a beginning , I think you might get better results using pick tapping instead of fingers ... Also effect settings helps , try adding more distortion , reverb & slight delay , if you have a compression pedal put it on.
As for guitar settings , lower string action is easier to tap on .

First learn to tap basic arpeggios with different patterns :

Am
e-t12-p5-h8--%|

Amaj
e-t12-p5-h9-p5--%|

Adim
e-t11-p8-p5--%|

A+
e-t13-p9-p5-h9--%|


Apply each pattern with different root notes to get other arpeggios , and try each arpeggio with every sequence (try coming up with your own sequences too).
After finishing these , try practicing them on more than one string , include string skipping ,add bends/slides or whatever, develope speed , and try tapping some scale patterns too .