When you get the base made, any decorative shape will be possible. You just make a form form a paper sheet and away you go..
The full tutorial about this technique is here:
Surface crochet makes a difference
In this tutorial made by Lilla Bjorn’s Crochet World you will learn how to make a perfect surface crochet on a round coaster. Simply by adding a simple round decor, you will get totally different elegant coasters and a coaster pattern is also included.
Bargello Crochet Afghan Block
This crochet granny square is a stunning work made using the Bargello technique. Work up a few of these granny squares and join them together for a uniquely beautiful crochet granny square afghan. The end result is a beautifully textured granny square that will instantly draw the eye of anyone who walks past it.In the designer's own words, "Bargello technique has long been used in embroidery (Florentine embroidery). I thought, why not try to crochet pattern in this technique? The essence of this technique is to use different blending colors and combinations of them so that there were flames, waves, peaks. In the Bargello technique, you can associate a square from the center, a circle or a round motif. It'd be chic to crochet Bargello blankets, bedspreads, pillowcases, and cushion for chairs.
Triangle Shape Filet Square
"This free triangle shape solid filet square crochet pattern is a beginner+/ easy level pattern featuring easy to follow step by step instructions, a photo tutorial, and a universal stitch diagram. The pattern calls for #3 lightweight DK yarn and a size G6/ 4mm crochet hook. Double crochet and chain stitches are used to create the eyelet pattern shaped after a triangle. The pattern is one part of a larger baby blanket with several different shapes included. The simple and fun crochet pattern is perfect for not just a baby blanket but a dishcloth, coaster and more!"
How To Crochet A Granny Square
"The granny square is the easiest crochet square out there and should be one of the first things a beginner should learn. It sets the start for more intricate patterns and designs. You can crochet a few rows and stop to form classic granny squares which are joined together, or you can continue with the rounds of clusters to make your granny square as big as you like (and even turn it into a one-piece blanket). How do you crochet a granny square? A granny square is crocheted in the round and it's constructed with clusters of 3 double crochet stitches evenly spaced out to form a square shape. This granny square tutorial was designed for absolute beginners with step by step instructions and a video tutorial for those who learn better from watching how it's done. "
Heart Shape Filet Square
"This free heart shape solid filet square crochet pattern calls for a light weight #3 DK yarn in a color of your choice and a size G6 4 mm crochet hook. This design uses double crochet stitches and chain stitches, resulting in a project about 7 inches square; it is perfect to use as part of a blanket, a dishcloth, a coaster, and more! This easy to follow line by line directions include photos and a stitch diagram."
