You have to have good peripheral vision and you have to really concentrate.
( ( ( ( You ( have ( to ( have ( good ( peripheral vision ) ) ) ) ) ) and ) ( you ( have ( to ( really concentrate ) ) ) ) ) . )
(ROOT (S (S (NP (PRP You)) (VP (VBP have) (S (VP (TO to) (VP (VB have) (NP (JJ good) (JJ peripheral) (NN vision))))))) (CC and) (S (NP (PRP you)) (VP (VBP have) (S (VP (TO to) (VP (ADVP (RB really)) (VB concentrate)))))) (. .)))
You don't have to pay attention and may fall asleep without the fear of a mistake.
( You ( ( ( ( ( do n't ) ( have ( to ( pay attention ) ) ) ) and ) ( may ( ( fall asleep ) ( without ( ( the fear ) ( of ( a mistake ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP You)) (VP (VP (VBP do) (RB n't) (VP (VB have) (S (VP (TO to) (VP (VB pay) (NP (NN attention))))))) (CC and) (VP (MD may) (VP (VB fall) (ADJP (RB asleep)) (PP (IN without) (NP (NP (DT the) (NN fear)) (PP (IN of) (NP (DT a) (NN mistake)))))))) (. .)))