I was asked if I could add on to the gusset without changing the rest of the glove.. adjusted only one round ... same fit, more of the thumb covered ... I used I Love This Yarn in Brileybug for the new ones.. 
Classic fingerless gloves with longer thumb gusset 
 Size 9 US dpns or circular needles
 gauge 7 sts. by 11 rows per 2 inches 
 76 yards of worsted weight yarn 
 Both gloves made the same
 k = knit
 knit = knit all stitches of that round
 k2tog = knit 2 stitches together
 kf/b = knit the front loop like normal, then knit the back loop of the same stitch making a one stitch increase
 p = purl
 psso = pass slid stitch over stitch just worked 
 sl st = slide stitch purl wise 
 ( )x = repeat instructions inside of brackets as many times as the number after the x indicates
 cast on 30 stitches, join in the round 
 1) k1, p1
 2) p1, k1
 3) k1, p1
 4) p1, k1
 5) k1, p1
 6) p1, k1
 7) sl st, p1, psso, ( k1, p1 )x6, k1, sl st, k1, psso, ( p1, k1 )x6, p1
 8) sl st, p1, psso, ( k1, p1 )x6, sl st, k1, psso, ( p1, k1 )x6
 9) k1, p1
 10 - 13) knit
 14) ( k2tog, k11 )x 2
 15 - 24) knit
 25) kf/b stitch marker, k22, stitch marker, kf/b 
 26) knit
 27) k1, kf/b, k22, kf/b, k1
 28) knit
 29) k2, kf/b, k22, kf/b, k2
 30) knit
 31) k3, kf/b, k22, kf/b, k3
 32 - 33) knit
34) knit to end of round, knit 5 off ( gusset stitches ) next round, turn, p10 turn k5
35) k27, * k2tog, slip the stitch back onto the left needle purl wise * repeat until all of the thumb gussets stitches are worked ( all stitches between stitch markers ) 
 36) k20, kf/b 
 37) kf/b into the next stitch joining in the round again, knit the rest of the round
 38 - 44) knit
 bind off as * k2tog, slip the stitch back onto the left needle purl wise * repeat to end, fasten down, weave in ends