[caring guy]

Hi
I think there's a fine line to be had when given a second chance. Being too much & trying too hard can be off putting, but showing signs of getting into old ways is another that sends signs of not changing.
I'm after help here!
I'm with someone for 17 months, great at first, obviously a fiew differences, my likeing for red wine being one & she has 2 kids of 6 & 10. Were both 30.
Commitment is what she has wanted. Not from day one but the last 6 months, to show that the relationship can progress & i move in with her.
Initially i want my cake & eat it & thought a double life of being on my own & then going hers would be ok (for me) & took for granted things that it would continue!
Lately things have been a bit rough & her needing space & it has been a wake up call, kick up the butt & made me realise what i want. Too late you may say & so i thought after i found out she had a brief fling, with a guy 10 years her junior who was up for commitment & i said after months & months i didn't & a wake up was needed. She met him by chance in a bar, they had dinner, a snog, no sex as she said she still thinks of me & only seen him, twice hardly knows him!
So now, I've been house sitting for her as she's on vacation with her mum, kids & sister.
She don't believe i'll change & comit, but the saying i told her "Actions speak louder than words" i told her & if i mess up, & this guy still like s her, he's welcome to her.
The signs are this is going to be ok. We just chatted & she said the reason they didn't have any sexual contact was because of her feelings for me.
She said she will tell him the score, no promises, but i'll have my chance to show her!!

Question!/ How!
I need to woo her again, i already buy flowers, state my love & i know the things she don't like about me, but by doing things initially for when she gets home, like cleaning up her terrible garden, cleaning her house, being charming, wearing nice clothes!!
Will this be too much all at once?.
I know the romance & sex thing will be a natural occurance & not rushed, but any ideas as to what to do & how go about it, to impress, make her feel special & show her i'm 100% on this & no (heard it all before) thing, how can i make her see that this is it for me. Do or bust & what are the boundaries!