Next, take your awesome Ikea fabric (Fredrika!) and lay that sucker on there. Remember to double it over first! The edge I didn't name (and clearly should have) should be situated on a fold. My mum is like my dealer - she gets me access to stuff I can't get way out here. Thanks for being my fabric pimp, mum!
Cut that sucker out. Leave about 1cm seam allowance on all sides (not so important on the bottom seam, but still leave a little extra). At this point, if your kitty is weaving around your ankles and demanding that she be given a tidbit, it's probably best to oblige her so she leaves you alone.
Isn't it cute??? Looks like a little kimono.... no, calm down Helly, get this one finished first. That's next in the list.
Do the same with your felt, only don't bother leaving a cm of allowance. It'll help that sucker fit right in. I didn't have any nice, handmade felt, so I went and bought a length of the fake stuff. It'll serve this purpose! (Plus it's three days till pay day, so I went the cheaper option!) Again, make sure that bottom seam is on a fold.
Turn your fabric inside out and sew (a) to (a), like you were closing up the sleeves of a cute little kimono. I used a straight stitch.
Next, begin to curse and beat your machine as the thread tangles continuously and inexplicably. After restraining yourself from tossing it out the door (You'd really like to finish this project and get to that kimono, wouldn't you?) examine things closer and realise it wasn't the machines fault, it was the thread. Apologise profusely and re-thread, all the while promising you won't say such awful things to your beloved machine again.
Um, now.... bring (c) and (d) together. I don't really know how to explain it better, but, to quote a favourite Terry Pratchett line, "It'll be.... obvious, right?". So, sew along and close up the ends. And yes, that's my baby house in the picture. Say hi, baby! It's your first blog appearance!
Before you do that, you should decide which way you want your seam to lay and iron it flat, right? But hey... I forgot. Still, it worked out ok.
Voila! One Floppy Box!
Now, repeat the above steps with your felt insert, Ok, now bung your felt insert in, no need to turn it inside out obviously. Make sure it's gonna fit neatly. Also at the point, check to see whether it's upper edge is shorter than the fabric edge. If it's longer, take it out and trim so it sits about 1cm below the raw fabric edge. This'll become obvious why, because now you have to fold the fabric edge under the felt and pin it, getting ready to sew it down.
Which, when you've done it, should look like this! Yay! I sewed it about 1/2 cm from the edge.
Then, in a mad panicked moment, rush into the other room to check that you actually did get the dimensions right, and breathe a sigh of relief when you see that you did.
Now, go and make more! There now, don't you feel clever? I know I do!