Pikachu Hat Tutorial

Not the person who originally made this tutorial, but the rabbit ears would probably work like these - clearkid.deviantart.com/art/Ho… - basically, you'd want to sew together two and two hat triangles (assuming you'd be using clearkid's hat pattern and tutorial), then sew those two parts together with the end of the ears in between them. If you want them to be large and floppy like in the picture you added, you might want to not stuff the ears - in fact, you might just be fine with cutting the ear shape out of fleece, adding the inside of the ear (through whip stitching), or if you want a large inside of the ear, make them like the ears shown in these tutorials but leave out the stuffing.
Alternatively, you could use this clearkid.deviantart.com/art/Bu… as a visual reference - the ears are somehow sewn between the triangles and the bottom band of the hat. I can't exactly tell you how - I'd need to see the inside of it - but I think the end of the ear might just be sewn between the two halves of the bottom band. Not quite sure.

Really late answer and I'm not who made the tutorial - but I believe you just put the ear on top of the hat with the bottom edge against the hat's top seam (they should lean backwards on the hat, like you can see on the last picture), and whip stitch them on.

oops found it

Nikkiswimmer from her new account: If you need proper measurements to make the hat base, check out ~Clearkid's tutorial, download her pattern, and print the PDF file at 100%. Her pattern comes with a 1/4'' seam allowance, so keep that in mind! Most heads are 22-23'' in circumference.

For the decorations, you'l just need to practice and experiment with sizes, always keeping in mind that items being sewn on a machine will need to be designed with seam allowance in mind (AKA, make your pattern slightly bigger all around the edges). If you're going to whipstitch something on, a seam allowance might not be as necessary.

If you really want/need a pattern for the pikachu hat, I have one available: [link] I included the length and width of each item to give people a reference for what size things should be. No seam allowance needed. Just download and print at 100%.

nikkiswimmer here on my other account. If you want to add a mouth, you can choose to either:

1. Applique it on using black silky thread
2. Draw/paint it on
3. Whip-stitch a mouth-shaped piece of felt on

Nikkiswimmmer on my other account. Looks amazing! ;--; So cute

[link]
Happy sewing!

I believe I gave credit to ~clearkid for the actual hat making part, but here is the actual link to her tutorial: [link]
Happy sewing!