Possibly the simplest pattern. Also possibly infinite variations.
What sort of pattern user are you ?
Are you a near beginner ?
Someone who likes to make something to wear quickly ?
Someone looking for a simple base to start from while developing your skills? You could use one of these very simple patterns to explore : drafting your own pattern, improving the fit, changing the style and sewing a wide variety of style elements, or embellishing your garments with textile-altering.

This became a very long post.
So I have divided it into 3 sections :
1. patterns – purchase or make your own (this post).
2. fit – make a test garment and improve the fit and look, then revise the original pattern.
3. make and vary – make a wearable top, followed by many possible variations, such as : changing the fabric, style elements, proportions, or adding embellishments.

Many possibilities for getting a basic pattern for this style.
I have listed a few of the commercially available patterns, and also some guides to drafting your own from your personal measurements.

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Commercial patterns

Here’s one example :
louboxtop
Lou Box Top from SewDIY, up to body bust 58″, neckline has bias facing finish.

with supplements :
add a variety of sleeve lengths.
photo tutorials for sew along and variations.
dress version with choice of 2 sleeves, 2 hems, many pockets.
dress with gathered waist and another neckline shape and pocket.

Here are a couple more patterns with variations included. These companies also have simple patterns for pants and jacket, to make an easy outfit/ capsule.
All Well Workshop (body bust 32″-62″).
Tropical Research (body bust 30″-44″).

Many pattern companies include a cut-on sleeve pattern. I’m mentioning a few which claim to help beginners. See some other cut-on sleeve top patterns on this pinterest board.

Fibr & Cloth is a company that encourages slow hand sewing (though that isn’t essential !) Her patterns go up to body bust 64″, hip 68″. And also have some good skill expansions.
Her Yarrow top/ tunic with shirt-tail hem is a classic cut-on sleeve pattern, with free sleeve extension.
Her Photinia pattern neckline is gathered into a binding. Has an extension for ruffles, and more hacks in the blog.

Sonya Philips' book The Act of Sewing includes a full-size cut-on sleeve top pattern (body bust up to 56″), and half the book is on pattern hacking and sewing for style variations.
She also has a Creative Bug class, with video teaching and a pdf pattern.

The Sew Liberated Strata top (body bust up to 55″) also has a sew-along video.
Seamwork magazine has a ‘learn to sew‘ video class which uses their Bo top pattern (up to body bust 54″). This class is only open to members.

There are a couple of links to photo sew-alongs in the Make section in the third post.

Another source of more extended sizes, Muna & Broad’s Torrens top goes up to body bust 64″, and they offer to draft their patterns larger if you need it. Sew-along videos and hacking suggestions.

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Make your own personalised pattern

If you’d like guidance when drafting your own cut-on sleeve top pattern, Cal Patch has a video class at Creative Bug which covers :
– drafting a pattern from your measurements,
– simple variations,
– sew-along.
Or here is a free photo tutorial from her, at A Verb For Keeping Warm.

Or you might draw out your own pattern following your own thoughts. On a big sheet of paper, or direct onto the fabric.
Cal Patch’s drafting and many of the commercial patterns are for a ‘box top’, which is square or rectangle in shape. Perhaps you would prefer something like the shape below.
Best to know the widths and lengths you want it to be :
– length, measured down from shoulder point (measure the length of favourite garments).
– sleeve length, measure from nape of neck down to where you want the sleeve hem.
– bust, as on image below, or measure the width of a favourite garment.
– sleeve width similarly : half biceps measure + 3″/8cm or more.
The 3″ added width will give you 2 seam allowances plus about 4″/10cm ease between body and garment.

If you plan to wear your top as an overlayer, take your bust, hip and biceps measures over the garments you will be layering over, not just over your underwear !

patternease
Test garment cut out of Pattern Ease (tunic length on me)

Not to worry about how good this pattern is. Don’t expect to get the pattern ‘right’ before doing any sewing, as that is close to impossible. The second post in this group is about altering a test garment until it’s comfortable and looks like what you want.
I once followed detailed instructions for drafting a bodice pattern from my measurements. Then made and altered a test garment. There was only one measure out of all I had started from which was unchanged by the time I had got the bodice to fit me.

You can take the pattern to use for a ‘for real’ garment from the altered test garment, also see second post.

Or, if taking measurements doesn’t appeal, simply draw around a garment that you know works for you – a tee (if you’re making a pattern for knits) or top (pattern for wovens).

tracearound
drawing from Illustrated Hassle-Free Make your own clothes book.
Notice they have added seam allowances.

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So now you have your pattern. Well done 👍 😀
This is the first of three posts about making cut-on sleeve tops. The others are :
2. fit – make a test garment and improve the fit and look, then revise the original pattern.
3. make a wearable top, followed by many possible variations, such as changing the fabric, style elements, proportions, or embellishments.

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