Sexy arms - advice needed

Hiya. I hope I'm posting in the right place?
I started lifting weights again today after a long absence. In my old routine I used kettlebells and lifted dumbells, and did tone a little but never really got the result I wanted. I dream of sculpted arms and toned body! My question is, what weight should I be lifting, how many reps and how often for the best results? I am really watching what I eat now, which I wasn't before, but should I restrict my fat intake? Bit clueless as you've probably guessed! Advice and before and after photos would be most welcome :-)
Cheers
Louise
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