Looking better! Looks much less intimidating to beginners when the line is shorter!!!
You could still tighten it up if you want in some of the rows by using a repeat such as (P2, K2) twice but it is fine the way it is in my humble opinion.
Such as:
Mystery Washcloth/Square
Border on knitted side: * k1, p1, k1, p1, k1 * = *k*
Border on purled side: * p1, k1, p1, k1, p1 * = *p*
Cast on 50
Row 1: k50
Row 2: p2, k2, p1, k40, p1, k2, p2
Row 3: (k1, p1)twice, k42, (p1, k1)twice
Row 4: p1, k2, p2, k40, p2, k2, p1
Row 5: k50
Row 6: *p*, k40, *p*
Row 7: *k*, p24, k2, p14, *k*
Row 8: *p*, k12, p4, k17, p3, k4, *p*
Row 9: *k*, p4, k3, p17, k6, p10, *k*
Row 10: *p*, k4, p2, k4, p13, k10, p5, k2, *p*
Row 11: *k*, p2, k5, p8, k15, p4, k2, p4, *k*
Row 12: *p*, k2, p4, k6, p14, k7, p5, k2, *p*
Row 13: *k*, p13, k15, p6, k4, p2, *k*
Row 14: *p*, k11, p17, k12, *p*
Row 15: *k*, p12, k17, p11, *k*
Row 16: *p*, k8, p4, k3, p7, k5, p1, k12, *p*
Row 17: *k*, p9, k9, p1, k5, p1, k7, p8, *k*
Row 18: *p*, k8, p8, k1, p3, k1, p11, k8, *p*
Row 19: *k*, p7, k13, p1, k11, p8, *k*
Row 20: *p*, k9, p10, k1, p13, k7, *p*
Row 21: *k*, p7, k13, p1, k9, p10, *k*
Row 22: *p*, k11, p7, k2, p2, k1, p5, k2, p3, k7, *p*
Row 23: *k*, p6, k3, p2, k1, p1, k3, p1, k1, p1, k3, p1, k5, p3, k3, p6, *k*
Row 24: *p*, k6, p3, k4, p4, k1, p3, k1, p1, k1, p3, k1, p1, k2, p3, k6, *p*
Row 25: *k*, p6, k21, p4, k5, p4, *k*
Row 26: *p*, k4, p5, k4, p2, k3, p4, k1, p1, k2, p1, k1, p5, k7, *p*
Row 27: *k*, p8, k5, p4, k5, p3, k2, p4, k5, p4, *k*
Row 28: *p*, k13, p2, k3, p2, k1, p3, k2, p5, k3, p2, k4, *p*
Row 29: *k*, p4, k2, p7, k4, p3, k2, p3, k2, p13, *k*
Row 30: *p*, k13, p2, k3, p2, k14, p4, k2, *p*
Row 31: *k*, p2, k4, p14, k2, p3, k2, p8, k2, p3, *k*
Row 32: *p*, k2, p3, k8, p3, k2, p3, k19, *p*
Row 33: *k*, p17, k11, p7, k3, p2, *k*
Row 34: *p*, k11, p2, k1, p2, k1, p1, (k1, p2)twice, k16, *p*
Row 35: *k*, p40, *k*
Row 36: *p*, k40, *p*
Row 37: *k*, p1, k2, p2, k3, p3, k3, p2, k6, p2, k2, p4, k2, p1, k6, p1, *k*
Row 38: *p*, k1, p1, k3, p2, k1, p2, k4,( p2, k2) 3 times, p4, k1, p4, k2, p2, k1, *p*
Row 39: *k*, p1, k2, p2, k9, (p2, k2)twice p3,( k2, p2)twice , k2, p5, *k*
Row 40: *p*, k5, p2, k3, p4, k5, p5, k2, p9, k2, p2, k1, *p*
Row 41: *k*, p1, k2, p3, k7, (p3, k2)twice, p4, k2, p4, k2, p5, *k*
Row 42: *p*, k5, p2, k4, p2, k4, p2, k3, p2, k4, p5, k4, p2, k1, *p*
Row 43: *k*, p1, k2, p5, k3, p5, k2, p3, k2, p4, k2, p4, k2, p3, k1, p1, *k*
Row 44: *p*, k1, p6, k4, p2, k4, p7, k6, p1, k6, p2, k1, *p*
Row 45: *k*, p40, *k*
Row 46: p50
Row 47: k1, p2, k2, p40, k2, p2, k1
Row 48: (p1, k1)twice, p42,( k1, p1)twice
Row 49: k2, p2, k1, p40, k1, p2, k2
Row 50: p50
Cast off
I may have missed some...........
I would say size 6 or 7 needles depending what type of yarn you were using.