I am using one of my lace yarn samplers (Sunkissed) to knit the Diamond Lace Scarf. The pattern says to use size 8 needles...I'll knit one more section, but it looks a little loopy. Should I go down one size (US 7) to tighten it up a bit? Have to go out and buy them, so would one size down be a visual difference? Thank you for any advice...my first time with lace..I love a challenge!