Since Halloween is near these are all my related alters:

 And the sketches I based them on:

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Here is another fan art group of alters I've done, this time the theme is Thundercats:

The Sword of Omen as a Jitte:

Cheetara as a Stoneforge Mystic:

Panthro on a Beast Within:

A Command Tower altered into a Cat's Lair:

Some reinforcements arriving:

Mumm-Ra as a transforming Delver of Secrets:

And a Swamp made into Mumm-Ra's pyramid:

The only sketches I've made were for Cheetara and Panthro, the rest were drawn straight on the cards.

These two Heartless Summoning are fan art themed after Kingdom Hearts with tons of Heartless. 

Version one:

And version two:

Another 4 of the first version I made for a set:

 This is the sketch for the second version before I transfer it with carbon paper on the card.All 5 cards with the first version where drawn straight on the card.

My latest attempt on creating some original art nouveau style cards:

And the sketches I made beforehand:

Being a horror movie fan I couldn't resist not to paint this group of cards.I used a still from each movie as reference.

It (1990).

Nosferatu (1922).

Sweeny Todd (2007).

The Woman in Black (2012).

Ju-on: The Grudge (2002)

 The Ring (1998).

Sometimes I paint a group of alters themed after something specific.The first group I painted this way with original fan art was these 5 cards themed after the Legend of Zelda games.

A Stoneforge Mystic with princess Zelda and the Master Sword as they appear in the The Legend of Zelda: Twilight Princess.

For this I painted Agahnim and Zelda as they appear in The Legend of Zelda: A Link to the Past.

For this Plains card I painted Zelda from the latest game, The Legend of Zelda: Skyward Sword.

The next two are based on screenshots from  A Link to the Past.

 And this Swamp has Midna from The Legend of Zelda: Twilight Princess.

These cards are also related with the Zelda games but they were painted before and after the previous group with various Link fan art.

These two cards are an attempt to make some nouveau themed alters with original art not based straightly on existing Alphonse Mucha's paintings.

 The first one is a Jhoira of the Ghitu:

The sketch I made on paper before I work on the card.

The other one is a second try on a Jace I've done before, here it is:

 And the first sketch I based it on:

  Two cards I have made, inspired by classic horror literature, both in total black and white.

  The first is a Dark Ritual, created for an altered art contest, with some Cthulhu fan art.Some of the details are not even from H.P. Lovecraft's work: the book (De Vermis Mysteriis) is from Robert Bloch's Cthulhu mythos works (who also wrote Psycho) and the flavor text is  actually from a Cthulhu related internet meme!

Also this is the testing sketch for the card.

The next on is fan art based on Edgar Allan Poe's classic, the Black Cat. I like the fact that the flavor text coincidentally (?) matches Poe's story.

 This is the sketch I made on paper before I paint the card.