The most important thing is that you are comfortable, and that you're not wearing baggy or loose fitting clothing so you can make sure you're forming and moving correctly in the mirror.
1	The	the	DET	DT	Definite=Def|PronType=Art	4	det	4:det	Discourse=elaboration-additional:57->56:0|Entity=(65-event-new-cf2-4-coref
2	most	most	ADV	RBS	Degree=Sup	3	advmod	3:advmod	_
3	important	important	ADJ	JJ	Degree=Pos	4	amod	4:amod	_
4	thing	thing	NOUN	NN	Number=Sing	9	nsubj:outer	9:nsubj:outer	Entity=65)
5	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	cop	9:cop	_
6	that	that	SCONJ	IN	_	9	mark	9:mark	_
7	you	you	PRON	PRP	Case=Nom|Number=Sing|Person=2|PronType=Prs	9	nsubj	9:nsubj	Entity=(65-event-giv:act-cf2-3,10-coref(17-person-giv:inact-cf1-1-ana)
8	are	be	AUX	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	9	cop	9:cop	_
9	comfortable	comfortable	ADJ	JJ	Degree=Pos	0	root	0:root	SpaceAfter=No
10	,	,	PUNCT	,	_	16	punct	16:punct	_
11	and	and	CCONJ	CC	_	16	cc	16:cc	Discourse=joint-list_m:58->57:0
12	that	that	SCONJ	IN	_	16	mark	16:mark	_
13	you	you	PRON	PRP	Case=Nom|Number=Sing|Person=2|PronType=Prs	16	nsubj	16:nsubj	Entity=(17-person-giv:act-cf1-1-ana)|SpaceAfter=No
14	're	be	AUX	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	16	aux	16:aux	_
15	not	not	PART	RB	Polarity=Neg	16	advmod	16:advmod	_
16	wearing	wear	VERB	VBG	Tense=Pres|VerbForm=Part	9	conj	9:conj:and	_
17	baggy	baggy	ADJ	JJ	Degree=Pos	21	amod	21:amod	Entity=(66-object-new-cf4-5-sgl
18	or	or	CCONJ	CC	_	20	cc	20:cc	_
19	loose	loose	ADV	RB	Degree=Pos	20	advmod	20:advmod	_
20	fitting	fitting	ADJ	JJ	Degree=Pos	17	conj	17:conj:or|21:amod	_
21	clothing	clothing	NOUN	NN	Number=Sing	16	obj	16:obj	Entity=66)65)
22	so	so	SCONJ	IN	_	25	mark	25:mark	Discourse=purpose-goal:59->57:1
23	you	you	PRON	PRP	Case=Nom|Number=Sing|Person=2|PronType=Prs	25	nsubj	25:nsubj|26:nsubj:xsubj	Entity=(17-person-giv:act-cf1-1-ana)
24	can	can	AUX	MD	VerbForm=Fin	25	aux	25:aux	_
25	make	make	VERB	VB	VerbForm=Inf	16	advcl	16:advcl:so	_
26	sure	sure	ADJ	JJ	Degree=Pos	25	xcomp	25:xcomp	_
27	you	you	PRON	PRP	Case=Nom|Number=Sing|Person=2|PronType=Prs	29	nsubj	29:nsubj|31:nsubj	Entity=(17-person-giv:act-cf1-1-ana)|SpaceAfter=No
28	're	be	AUX	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	29	aux	29:aux|31:aux	_
29	forming	form	VERB	VBG	Tense=Pres|VerbForm=Part	26	ccomp	26:ccomp	_
30	and	and	CCONJ	CC	_	31	cc	31:cc	_
31	moving	move	VERB	VBG	VerbForm=Ger	29	conj	26:ccomp|29:conj:and	_
32	correctly	correctly	ADV	RB	Degree=Pos	31	advmod	31:advmod	_
33	in	in	ADP	IN	_	35	case	35:case	_
34	the	the	DET	DT	Definite=Def|PronType=Art	35	det	35:det	Entity=(67-object-acc:com-cf3-2-sgl
35	mirror	mirror	NOUN	NN	Number=Sing	31	obl	31:obl:in	Entity=67)|SpaceAfter=No
36	.	.	PUNCT	.	_	9	punct	9:punct	_
