Bluey is an oversized, drop-shoulder construction garment. The body is knit in the round, up to the sleeves, and then completed in pieces. Shoulders are joined using the three-needle bind-off technique.
A different yarn used for sleeves was my attempt to add elegance and style and to make the garment more festive.
I suggest using similar yarn colours to make sleeves. A different texture of the yarn and lace pattern on the sleeves will make subtle and chic details.  
Sleeves are oversized and knitted in the round. The sleeve length is below the elbows.

The body of the pullover is knit with two strands of Nutiden Yarn to create a sturdy and, at the same time, lightweight fabric to hold the form.
I’ve chosen Fusion Sulco yarn for the sleeves (blue garments version). It has a beautiful sheen and is soft and silky. Sleeves knitted in the lace pattern look stunning, bringing another dimension to the whole look of the garment. 
I’ve chosen Isager Silk Mohair (pink sample) for the sleeves. The sleeves look puffy, fluffy and fuzzy. It brings more airiness and lightness to the design. 

You can play with any light-fingering weight yarn for the sleeves. Make the gauge sample to evaluate the stretch and drape. 

An alternative for Nutiden Yarn could be Plötulopi unspun wool - Icelandic wool by Ístex. One Icelandic Plötulopi plate is approx. 100 g (3.5 oz) approx. 300 m (328 yds).

Yarn for body:
Nutiden 280 (290, 320, 360, 390, 430) grams

Yarn for sleeves: 
Fusion Sulco (blue sample) 120 (120, 120, 120, 120, 120) grams
(4ply/fingering weight 50 gr ball 175m/190yds)

Isager Silk Mohair (pink sample) 40 (40, 40, 40, 40, 40) grams
(25gr ball 212m)

Gauge:
BODY: 21 stitches & 28 rows = 10x10 cm (4 “) in Stockinette stitch with 3.5 mm (US 4) needle(s) after blocking. Yarn: 2 strands of Nutiden Yarn.
SLEEVES: 30 stitches & 45 rows = 10x10 cm (4 “) in a lace pattern with 2.75 mm (US 2) needle(s) after blocking. Yarn Fusion Sulco.
HEM & NECKLINE: 30 stitches & 37.5 rows = 10x10 cm (4 “) in ribbing pattern with 2.75 mm (US 2) needle(s), after blocking. Yarn: 2 strands of Nutiden Yarn.

Needles:
Suggested needle Size for the Body: 3.5 mm (US 4), or the needle size required to meet the gauge.
The recommended needle size for the Hem and Neckband is 2.75 mm (US 2), or the required needle size to meet the gauge.
Suggested needle Size for the Sleeves: 2.75 mm (US 2), or the needle size required to meet the gauge. 

Dimensions
This garment is graded into sizes 1 (2, 3, 4, 5, 6). 
Recommended positive ease minimum 15 cm (6”) at the Upper Body Circumference. 

Samples:
Blue Sample
Body, Nutiden Val
Sleeves, Fusion Sulco Navy Blue
Size 2 with 31 cm (12 “) positive ease.
11 cm (4 “) longer than the pattern.

Pink Sample
Body, Nutiden Pikant
Sleeves, Isager Silk Mohair 62
Size 1 with 25 cm (10 “) positive ease.

Tools:
Interchangeable needles, spare cable needle, stitch markers, and tapestry needle for hiding the ends.