If you want a thumbnail next to the fullsize image then the fancy_image shortcode would work,
This would be your thumbnail
[fancy_images width = 100 height = 100]
link to your image
[/fancy_images]
And here would be your fullsize image
[fancy_images]
link to your image
[/fancy_images]
As for the recent posts thumbnail open up /wp-content/themes/awake/lib/functions/widgets.php and on line 421 you should see this..
<?php if(!$disable_thumb) { ?>
<a class="alignleft" href="<?php echo $permalink; ?>" title="<?php echo $post_title; ?>">
<span class="small_frame"><img class="fade_hover" src="<?php echo $meta_image; ?>" width="60" height="60" alt="<?php echo $post_title; ?>"/></span></a>
<?php } ?>
Go ahead and change it like this,
<?php if(!$disable_thumb) { ?>
<a class="alignleft" href="<?php echo $permalink; ?>" title="<?php echo $post_title; ?>">
<?php if (get_post_meta($post->ID, 'custom_widget_thumbnail', true)) { $meta_image = get_post_meta($post->ID, 'custom_widget_thumbnail', true); } ?>
<span class="small_frame"><img class="fade_hover" src="<?php echo $meta_image; ?>" width="60" height="60" alt="<?php echo $post_title; ?>"/></span></a>
<?php } ?>
And then in your post create a new custom field with a name of "custom_widget_thumbnail" and a value of a link to your image.
Let us know if this works for you mac13.