I've been a knitter now for a while but I was knitting a baby blanket in basic dishcloth pattern with 2 strands of yarn. Anyway, I accidentally dropped 1 strand and picked it up again. Now I have a hole . It's too late to go back- I'm almost finished- so how do I fix this without making it look obvious? Thats the only part I really hate about knitting- its unforgiving!